At what number on the stress test is it considered a full contraction?
Q. The doctor said I had a contraction today, but the lines hit up to 85. Is that considered a full contraction, or only if it hits 100? Also, is it normal to not feel contractions? I didn't even know I was having them. I am 30 weeks.
Asked by Jacki - Thu Nov 5 21:04:29 2009 - - 1 Answers - 0 Comments
A. The numbers on the machine are really arbitrary and not an accurate measure of the true intensity of a contraction, the purpose of the monitor is really to show how long the contractions last and how frequently they come. External monitors vary on how well they work because a tiny, thin woman with great muscle tone will trace huge contractions with big numbers even with mild Braxton Hicks that she might not even feel. A larger woman with a little extra padding might only trace little ant hills but be in full-blown labor, writhing in pain. The only true measure of the intensity of a contraction is an internal uterine pressure catheter (IUPC) which is placed up into the vagina, through the cervix, and into the uterus while you're in labor,… [cont.]
Answered by Jill - Thu Nov 5 21:14:35 2009
Q. The doctor said I had a contraction today, but the lines hit up to 85. Is that considered a full contraction, or only if it hits 100? Also, is it normal to not feel contractions? I didn't even know I was having them. I am 30 weeks.
Asked by Jacki - Thu Nov 5 21:04:29 2009 - - 1 Answers - 0 Comments
A. The numbers on the machine are really arbitrary and not an accurate measure of the true intensity of a contraction, the purpose of the monitor is really to show how long the contractions last and how frequently they come. External monitors vary on how well they work because a tiny, thin woman with great muscle tone will trace huge contractions with big numbers even with mild Braxton Hicks that she might not even feel. A larger woman with a little extra padding might only trace little ant hills but be in full-blown labor, writhing in pain. The only true measure of the intensity of a contraction is an internal uterine pressure catheter (IUPC) which is placed up into the vagina, through the cervix, and into the uterus while you're in labor,… [cont.]
Answered by Jill - Thu Nov 5 21:14:35 2009
What is the difference between aerobic and anaerobic muscle contraction?
Q. Please tell me some of the similarities and difference between these 2 muscular contractions. How do I distinguish one from the other? Please provide any links or any info. that explains the process of each contraction.
Asked by kevin - Sun Dec 6 17:45:38 2009 - - 1 Answers - 0 Comments
A. Aerobic muscle contraction, means muscle contraction in the presence of oxygen. In this case, the cells have plenty of oxygen, and can generate much more energy. In contrast, in anaerobic muscle contraction the cells do not have access to oxygen. Therefore, the cells will generate far less energy than in the case of aerobic muscle contraction.
Answered by BETTENZ - Sun Dec 6 17:52:45 2009
Q. Please tell me some of the similarities and difference between these 2 muscular contractions. How do I distinguish one from the other? Please provide any links or any info. that explains the process of each contraction.
Asked by kevin - Sun Dec 6 17:45:38 2009 - - 1 Answers - 0 Comments
A. Aerobic muscle contraction, means muscle contraction in the presence of oxygen. In this case, the cells have plenty of oxygen, and can generate much more energy. In contrast, in anaerobic muscle contraction the cells do not have access to oxygen. Therefore, the cells will generate far less energy than in the case of aerobic muscle contraction.
Answered by BETTENZ - Sun Dec 6 17:52:45 2009
What happens to the fetus during a braxton hick contraction?
Q. I noticed that my uterus gets really hard during a braxton hick contraction and the baby isn't moving. What is happening to the baby during this process? No crazy answers please.
Asked by blackdiamond2425 - Thu Sep 20 21:07:46 2007 - - 7 Answers - 0 Comments
A. I had this happen and I feared that the baby was hurting. Thay told me that the contractions was actually soothing to the baby like a hug and would lul the baby to sleep. but if you ever have a concern get checked out. You would never forgive yourself if something were wrong and you didn't go (weather there was something you could have done or not) If I didn't go in when I when I did My daughter wouldn't have made it another day. She stopped moving because there was no fluid left. This is the exception, but if never hurts to do a non-stress test. Good luck.
Answered by in COGNITO * - Thu Sep 20 21:12:54 2007
Q. I noticed that my uterus gets really hard during a braxton hick contraction and the baby isn't moving. What is happening to the baby during this process? No crazy answers please.
Asked by blackdiamond2425 - Thu Sep 20 21:07:46 2007 - - 7 Answers - 0 Comments
A. I had this happen and I feared that the baby was hurting. Thay told me that the contractions was actually soothing to the baby like a hug and would lul the baby to sleep. but if you ever have a concern get checked out. You would never forgive yourself if something were wrong and you didn't go (weather there was something you could have done or not) If I didn't go in when I when I did My daughter wouldn't have made it another day. She stopped moving because there was no fluid left. This is the exception, but if never hurts to do a non-stress test. Good luck.
Answered by in COGNITO * - Thu Sep 20 21:12:54 2007
What i the difference between isotonic and dynamic/concentric contraction?
Q. I thought isotonic means constant forcem but is this not also apllied in concnetric contraction?
Asked by bela13 - Wed Jun 6 12:43:16 2007 - - 2 Answers - 0 Comments
A. As you said, isotonic is same force with change in length. Dynamic contraction is both changes in force and length during contraction. When the muscles shorten during this contraction is called concentric contraction. When it is pulled out by the load, it is then called eccentric contraction. Hope this helps.
Answered by Sabrinne F - Thu Jun 7 16:56:36 2007
Q. I thought isotonic means constant forcem but is this not also apllied in concnetric contraction?
Asked by bela13 - Wed Jun 6 12:43:16 2007 - - 2 Answers - 0 Comments
A. As you said, isotonic is same force with change in length. Dynamic contraction is both changes in force and length during contraction. When the muscles shorten during this contraction is called concentric contraction. When it is pulled out by the load, it is then called eccentric contraction. Hope this helps.
Answered by Sabrinne F - Thu Jun 7 16:56:36 2007
How many of you know the difference between a uterine contraction and a uterine cramp?
Q. A muscle contraction and a muscle cramp are two totally different things. You don't want your uterus to cramp during labor.
Asked by pennypincher - Fri Mar 13 16:58:16 2009 - - 2 Answers - 0 Comments
A. And your point is...
Answered by Rozzibee - Fri Mar 13 17:09:02 2009
Q. A muscle contraction and a muscle cramp are two totally different things. You don't want your uterus to cramp during labor.
Asked by pennypincher - Fri Mar 13 16:58:16 2009 - - 2 Answers - 0 Comments
A. And your point is...
Answered by Rozzibee - Fri Mar 13 17:09:02 2009
How does expansion and contraction in railways make a difference?
Q. Railways need expansion and contraction how do they allow room for it to do that what does it cause and when do they expand and contract and why i am so confused its a major Science Question any info would be greatly appreciated Thanks
Asked by Estylove - Thu May 21 00:21:35 2009 - - 5 Answers - 0 Comments
A. Steel, as most any other material (water is a notable exception), expands when it gets hot, and shrinks when it cools. The longer the length of the (in this case) rail in question, the larger the potential expansion or contraction exists. If sections of steel rail are laid one next to another, and no space is allowed for heat expansion, hot rails will develop compression forces that will warp the steel from straight, to unstrap. The resulting curvature could cause the wheels to go left, right, up, or down from the intended direction. This could result in a train derailment ranging from very costly and annoying to lethal in its implications. To avoid this, rails are made of a specific length so that any reasonable amount of heat can be… [cont.]
Answered by SteveA8 - Thu May 21 00:44:58 2009
Q. Railways need expansion and contraction how do they allow room for it to do that what does it cause and when do they expand and contract and why i am so confused its a major Science Question any info would be greatly appreciated Thanks
Asked by Estylove - Thu May 21 00:21:35 2009 - - 5 Answers - 0 Comments
A. Steel, as most any other material (water is a notable exception), expands when it gets hot, and shrinks when it cools. The longer the length of the (in this case) rail in question, the larger the potential expansion or contraction exists. If sections of steel rail are laid one next to another, and no space is allowed for heat expansion, hot rails will develop compression forces that will warp the steel from straight, to unstrap. The resulting curvature could cause the wheels to go left, right, up, or down from the intended direction. This could result in a train derailment ranging from very costly and annoying to lethal in its implications. To avoid this, rails are made of a specific length so that any reasonable amount of heat can be… [cont.]
Answered by SteveA8 - Thu May 21 00:44:58 2009
Compare the control of the contraction of skeletal muscles to the control of increased contractions of card?
Q. Compare the control of the contraction of skeletal muscles to the control of increased contractions of cardiac muscle (increased heart rate). Be sure to be as specific as you can, including the description of the pathway and neurotransmitters involved?
Asked by Drama - Mon Aug 2 09:06:09 2010 - - 1 Answers - 0 Comments
A. use perhaps the Riemann's dzeta function
Answered by Etienne de Quercy - Fri Aug 6 07:04:10 2010
Q. Compare the control of the contraction of skeletal muscles to the control of increased contractions of cardiac muscle (increased heart rate). Be sure to be as specific as you can, including the description of the pathway and neurotransmitters involved?
Asked by Drama - Mon Aug 2 09:06:09 2010 - - 1 Answers - 0 Comments
A. use perhaps the Riemann's dzeta function
Answered by Etienne de Quercy - Fri Aug 6 07:04:10 2010
Compare the control of the contraction of skeletal muscles to the cardiac muscles?
Q. Compare the control of the contraction of skeletal muscles to the control of increased contractions of cardiac muscle (increased heart rate). Be sure to be as specific as you can, including the description of the pathway and neurotransmitters involved.
Asked by AIDA K - Thu Jul 23 18:53:21 2009 - - 3 Answers - 0 Comments
A. I have to say I agree 100% it's YOUR homework not ours. Surely you can manage to Google it! Cutting and pasting some other amateurs cut and pasted answer is hardly going to assist your education.
Answered by Dr Frank - Sat Jul 25 20:00:49 2009
Q. Compare the control of the contraction of skeletal muscles to the control of increased contractions of cardiac muscle (increased heart rate). Be sure to be as specific as you can, including the description of the pathway and neurotransmitters involved.
Asked by AIDA K - Thu Jul 23 18:53:21 2009 - - 3 Answers - 0 Comments
A. I have to say I agree 100% it's YOUR homework not ours. Surely you can manage to Google it! Cutting and pasting some other amateurs cut and pasted answer is hardly going to assist your education.
Answered by Dr Frank - Sat Jul 25 20:00:49 2009
How can you tell the difference between a BH contraction and the baby's movement?
Q. I know this sounds silly but I'm 23 weeks pregnant and I don't think I've ever had a BH contraction but my tummy feels hard sometimes for a few seconds and sticks out a bit. Can literally feel and see it moving. But muscles do that when they cramp up anyway, don't they? Is that the baby just turning over or is my uterus contracting with practice labour? Thanks for your help xx
Asked by heaven - Thu Dec 18 07:06:55 2008 - - 6 Answers - 0 Comments
A. That sounds like the baby was turning or kicking. I never recognized B.h's with my first. Now that I have given birth I can tel when I have them. Its a definite tightening of your uterus/tummy. It feels all seized up in way. And then when it releases it feels better. Its almost relief when it loosens. This sounds dumb but it reminds me of when you have a body part fall asleep and it feels separate from your body.
Answered by Alexanders and Katherines mama - Thu Dec 18 07:53:27 2008
Q. I know this sounds silly but I'm 23 weeks pregnant and I don't think I've ever had a BH contraction but my tummy feels hard sometimes for a few seconds and sticks out a bit. Can literally feel and see it moving. But muscles do that when they cramp up anyway, don't they? Is that the baby just turning over or is my uterus contracting with practice labour? Thanks for your help xx
Asked by heaven - Thu Dec 18 07:06:55 2008 - - 6 Answers - 0 Comments
A. That sounds like the baby was turning or kicking. I never recognized B.h's with my first. Now that I have given birth I can tel when I have them. Its a definite tightening of your uterus/tummy. It feels all seized up in way. And then when it releases it feels better. Its almost relief when it loosens. This sounds dumb but it reminds me of when you have a body part fall asleep and it feels separate from your body.
Answered by Alexanders and Katherines mama - Thu Dec 18 07:53:27 2008
What is a contraction and what s the purpose of having them during labor?
Q. I don't have children yet and I've heard scary stories about having them. My sister told me that you can't talk when you're having a contraction. Is this true?
Asked by phillylady4u - Fri Feb 2 12:49:10 2007 - - 12 Answers - 0 Comments
A. Labor contractions are the periodic tightening and relaxing of the uterine muscle, the largest muscle in a woman's body. During labor the uterus doesn't squeeze baby out; what really happens is the uterine contractions work to pull the cervical muscle up out of the way so that the baby's head can then be pushed through. (Think of a turtleneck sweater being slowly stretched as you pull it over your head. ) The muscles and ligaments in the pelvis are richly supplied with pressure and pain receptors in the nerves, so the stretching produces powerful sensations that may be interpreted as pain, especially if there is tension in the surrounding muscles. I talked when having contractions.. Its how a person tolerates pain. Also, some just don't… [cont.]
Answered by female - Fri Feb 2 13:02:38 2007
Q. I don't have children yet and I've heard scary stories about having them. My sister told me that you can't talk when you're having a contraction. Is this true?
Asked by phillylady4u - Fri Feb 2 12:49:10 2007 - - 12 Answers - 0 Comments
A. Labor contractions are the periodic tightening and relaxing of the uterine muscle, the largest muscle in a woman's body. During labor the uterus doesn't squeeze baby out; what really happens is the uterine contractions work to pull the cervical muscle up out of the way so that the baby's head can then be pushed through. (Think of a turtleneck sweater being slowly stretched as you pull it over your head. ) The muscles and ligaments in the pelvis are richly supplied with pressure and pain receptors in the nerves, so the stretching produces powerful sensations that may be interpreted as pain, especially if there is tension in the surrounding muscles. I talked when having contractions.. Its how a person tolerates pain. Also, some just don't… [cont.]
Answered by female - Fri Feb 2 13:02:38 2007
What feeling does a contraction resemble or feel like?
Q. The Description of a contraction, Does it feel like a Period Cramp?
Asked by Lauren Smith - Thu Apr 24 20:09:57 2008 - - 15 Answers - 0 Comments
A. Similar, but 100 times worse.
Answered by Momof2Boys - Thu Apr 24 20:20:46 2008
Q. The Description of a contraction, Does it feel like a Period Cramp?
Asked by Lauren Smith - Thu Apr 24 20:09:57 2008 - - 15 Answers - 0 Comments
A. Similar, but 100 times worse.
Answered by Momof2Boys - Thu Apr 24 20:20:46 2008
How can I tell if I am having a real contraction?
Q. I am (according to my doctor) 35 weeks prego. For the past couple of days I have been having cramps in my lower abdoman and my whole stomach will feel hard like a rock. The cramps seem to be pursistant but the rock feeling comes a goes. Am I having contractions? I don't remember from my first pregnancy what it felt like to have a contraction. I know they say that your uterious gets hard, but I how can I tell if I am really having a contraction or not? HELP!
Asked by gulia_j - Fri Dec 15 16:48:03 2006 - - 7 Answers - 0 Comments
A. Unfortunately I am proof you never really know, some women may know hteir signs but I have very irregular and not textbook at all. W/ my 1st my water broke 11 hours before I ever had a real contraction. My stomach tightened but they didn't do anything. 2nd child I had contractions that hardly were more than cramps and I was in transition and didn't know it. They were at least 10 min and then they would just stop, about an hour later I delivered! 3rd I didn't have contractions that hurt until my water broke and had him 15 min. later.
Answered by Ashley C - Fri Dec 15 16:55:22 2006
Q. I am (according to my doctor) 35 weeks prego. For the past couple of days I have been having cramps in my lower abdoman and my whole stomach will feel hard like a rock. The cramps seem to be pursistant but the rock feeling comes a goes. Am I having contractions? I don't remember from my first pregnancy what it felt like to have a contraction. I know they say that your uterious gets hard, but I how can I tell if I am really having a contraction or not? HELP!
Asked by gulia_j - Fri Dec 15 16:48:03 2006 - - 7 Answers - 0 Comments
A. Unfortunately I am proof you never really know, some women may know hteir signs but I have very irregular and not textbook at all. W/ my 1st my water broke 11 hours before I ever had a real contraction. My stomach tightened but they didn't do anything. 2nd child I had contractions that hardly were more than cramps and I was in transition and didn't know it. They were at least 10 min and then they would just stop, about an hour later I delivered! 3rd I didn't have contractions that hurt until my water broke and had him 15 min. later.
Answered by Ashley C - Fri Dec 15 16:55:22 2006
What is the right way to time contraction?
Q. Is there a specific way to time contraction?
Asked by bnslucky - Sun Apr 8 12:13:20 2007 - - 3 Answers - 0 Comments
A. you do it from the time the one starts to the time the other starts it dont matter how long they last it what the time iin between the time they start i know this because my mother is a labor nurse and i had trouble with both my pregnancies and had contraction from 6 months on till i delivered.good luck remember start timing when one starts then see how long it is till the next one starts!! goo luck
Answered by heather l - Sun Apr 8 12:23:46 2007
Q. Is there a specific way to time contraction?
Asked by bnslucky - Sun Apr 8 12:13:20 2007 - - 3 Answers - 0 Comments
A. you do it from the time the one starts to the time the other starts it dont matter how long they last it what the time iin between the time they start i know this because my mother is a labor nurse and i had trouble with both my pregnancies and had contraction from 6 months on till i delivered.good luck remember start timing when one starts then see how long it is till the next one starts!! goo luck
Answered by heather l - Sun Apr 8 12:23:46 2007
Why is a rich blood supply important for muscle contraction?
Q. I have a feeling the answer may be that calcium, stored in the sarcoplasmic reticulum of each muscle cell needs to be there, to bind with oxygen in the myoglobin, to form ATP...to in turn create contraction? Or am I completely wrong?
Asked by Andy H - Wed Nov 18 10:46:25 2009 - - 1 Answers - 0 Comments
A. it is simply due to the greater need for oxygen due to amount of work or energy performed by muscles
Answered by joe g - Sat Nov 21 00:29:56 2009
Q. I have a feeling the answer may be that calcium, stored in the sarcoplasmic reticulum of each muscle cell needs to be there, to bind with oxygen in the myoglobin, to form ATP...to in turn create contraction? Or am I completely wrong?
Asked by Andy H - Wed Nov 18 10:46:25 2009 - - 1 Answers - 0 Comments
A. it is simply due to the greater need for oxygen due to amount of work or energy performed by muscles
Answered by joe g - Sat Nov 21 00:29:56 2009
How does the force developed vary with the rate of contraction?
Q. How does the force developed vary with the rate of contraction?
Asked by Sugar Plum - Tue May 18 21:49:24 2010 - - 1 Answers - 0 Comments
A. If by force, you mean the contractile force of the heart, that typically increases with rate. It is presumed due to the fact that Ca++ levels build in the muscle with rapid sequential rates, increasing the contractile force. See figure 19-15 on pages 5-6. In practice however, it is usually more complicated in that. If a human being's heart rate increases, it is usually due to stress or exercise. That means there are more catecholamines circulating, or there is an increase in preload to the heart. Extra catecholamines and increasing preload also increase contractility. It is rare except in a laboratory experiment where you would only get an increase in rate, but not an increase in the other two. But I think this laboratory… [cont.]
Answered by defensewinschampionships - Tue May 18 23:20:37 2010
Q. How does the force developed vary with the rate of contraction?
Asked by Sugar Plum - Tue May 18 21:49:24 2010 - - 1 Answers - 0 Comments
A. If by force, you mean the contractile force of the heart, that typically increases with rate. It is presumed due to the fact that Ca++ levels build in the muscle with rapid sequential rates, increasing the contractile force. See figure 19-15 on pages 5-6. In practice however, it is usually more complicated in that. If a human being's heart rate increases, it is usually due to stress or exercise. That means there are more catecholamines circulating, or there is an increase in preload to the heart. Extra catecholamines and increasing preload also increase contractility. It is rare except in a laboratory experiment where you would only get an increase in rate, but not an increase in the other two. But I think this laboratory… [cont.]
Answered by defensewinschampionships - Tue May 18 23:20:37 2010
How to stop the contraction of Aids to offspring?
Q. I'm in Model UN and my proposal is to stop the spread of HIV and blood born diseases around the world. What is the medicine that women take to stop the contraction of HIV to offspring by labour or just living in the womb. Thank you
Asked by Music love and poetry - Tue Apr 13 10:02:06 2010 - - 1 Answers - 0 Comments
A. Check this website for details -
Answered by dangerouzlee - Tue Apr 13 10:59:10 2010
Q. I'm in Model UN and my proposal is to stop the spread of HIV and blood born diseases around the world. What is the medicine that women take to stop the contraction of HIV to offspring by labour or just living in the womb. Thank you
Asked by Music love and poetry - Tue Apr 13 10:02:06 2010 - - 1 Answers - 0 Comments
A. Check this website for details -
Answered by dangerouzlee - Tue Apr 13 10:59:10 2010
What is physical basis of Length Contraction in special relativity?
Q. Einstein's theory of special relativity says that the length of an object such as a space ship moving at relativistic speeds undergoes a contraction along the dimension of motion. An observer at rest would observe the moving object to be shorter in length.How this works. What happens to physical properties of the object that it becomes shorter. why it contracts only in context of stationary reference frame and is there any empirical evidence in support of this theory?
Asked by Phil - Tue Sep 15 11:11:27 2009 - - 3 Answers - 0 Comments
A. The length contraction does not reflect any changes at all to the physical properties of the object. At one time (before the theory of relativity was accepted), there was a hypothesis that things contracted due to a physical interaction with the so-called "luminiferous ether" as they traveled through it; but this idea (along with the ether itself) was discarded in favor of relativity. Relativity predicts that time intervals and distance intervals are relative, not absolute; and today we interpret length contraction as simply a manifestation of the relativity of distance measurements. To put it more concretely: Consider how we'd measure the length of a passing space ship. We would record two events: say, "Event 1" is when the ship's… [cont.]
Answered by RickB - Tue Sep 15 11:43:31 2009
Q. Einstein's theory of special relativity says that the length of an object such as a space ship moving at relativistic speeds undergoes a contraction along the dimension of motion. An observer at rest would observe the moving object to be shorter in length.How this works. What happens to physical properties of the object that it becomes shorter. why it contracts only in context of stationary reference frame and is there any empirical evidence in support of this theory?
Asked by Phil - Tue Sep 15 11:11:27 2009 - - 3 Answers - 0 Comments
A. The length contraction does not reflect any changes at all to the physical properties of the object. At one time (before the theory of relativity was accepted), there was a hypothesis that things contracted due to a physical interaction with the so-called "luminiferous ether" as they traveled through it; but this idea (along with the ether itself) was discarded in favor of relativity. Relativity predicts that time intervals and distance intervals are relative, not absolute; and today we interpret length contraction as simply a manifestation of the relativity of distance measurements. To put it more concretely: Consider how we'd measure the length of a passing space ship. We would record two events: say, "Event 1" is when the ship's… [cont.]
Answered by RickB - Tue Sep 15 11:43:31 2009
33 weeks and getting a lot of contraction pains,is it a sign of early labour?
Q. I'm 33 weeks 1 day and been getting contraction pains mostly at night, sometimes it hurt sometimes not. I also notice I'm feeling bit nausea.. The doctor said my baby is big so I'm thinking if he is coming early because of his size also?
Asked by Kult - Wed Apr 21 05:50:06 2010 - - 5 Answers - 0 Comments
A. I'm afraid big babies don't come any earlier than small babies, you need your baby to stay put for another 4 weeks ideally, after 37 weeks is classed as "term" and you baby should be fine if you deliver from 37 weeks onwards. You are probably experiencing Braxton Hicks contractions, they are mini-contractions, your womb muscles practicing for the big day. They will happen more and more often now as delivery draws closer.
Answered by Trust me I'm a Doctor - Wed Apr 21 05:59:48 2010
Q. I'm 33 weeks 1 day and been getting contraction pains mostly at night, sometimes it hurt sometimes not. I also notice I'm feeling bit nausea.. The doctor said my baby is big so I'm thinking if he is coming early because of his size also?
Asked by Kult - Wed Apr 21 05:50:06 2010 - - 5 Answers - 0 Comments
A. I'm afraid big babies don't come any earlier than small babies, you need your baby to stay put for another 4 weeks ideally, after 37 weeks is classed as "term" and you baby should be fine if you deliver from 37 weeks onwards. You are probably experiencing Braxton Hicks contractions, they are mini-contractions, your womb muscles practicing for the big day. They will happen more and more often now as delivery draws closer.
Answered by Trust me I'm a Doctor - Wed Apr 21 05:59:48 2010
What are the factors that influence muscle contraction?
Q. I already know about the myosin heads binding with the actin in the thin filaments, etc. but what influences muscle contraction?
Asked by goingbananas - Mon Jan 4 13:21:07 2010 - - 1 Answers - 0 Comments
A. action potential is produced along a motor neuron and reaches a synapse, which causes intake of Ca+2. This causes acetylcholine to be exocytosed into the synaptic cleft. Receptors on the muscle bind to acetylcholine, causing another action potential. This action potential spreads along the T-tubules throughout the muscle and cause Ca+2 release from the sarcoplasmic reticulum. The Ca+2 binds to troponin which frees the actin to bind with myosin... then you know the rest. So basically factors would probably be: Action potential in a motor neuron Ca+2 influx and acetylcholine release at synaptic cleft Depolarization (action potential) in the T-tubules of the muscle Voltage-dependent Ca+2 release from the sarcoplasmic reticulum Hope… [cont.]
Answered by Logan - Mon Jan 4 13:50:04 2010
Q. I already know about the myosin heads binding with the actin in the thin filaments, etc. but what influences muscle contraction?
Asked by goingbananas - Mon Jan 4 13:21:07 2010 - - 1 Answers - 0 Comments
A. action potential is produced along a motor neuron and reaches a synapse, which causes intake of Ca+2. This causes acetylcholine to be exocytosed into the synaptic cleft. Receptors on the muscle bind to acetylcholine, causing another action potential. This action potential spreads along the T-tubules throughout the muscle and cause Ca+2 release from the sarcoplasmic reticulum. The Ca+2 binds to troponin which frees the actin to bind with myosin... then you know the rest. So basically factors would probably be: Action potential in a motor neuron Ca+2 influx and acetylcholine release at synaptic cleft Depolarization (action potential) in the T-tubules of the muscle Voltage-dependent Ca+2 release from the sarcoplasmic reticulum Hope… [cont.]
Answered by Logan - Mon Jan 4 13:50:04 2010
How exactly does a contraction feel?
Q. Im 39 weeks pregnant and I thought that I knew what a contraction felt like, but tonight I am feeling what seem like menstral cramps, meaning it's mostly in the lower abdomen and lower back. its happening about 1 time every 10-15 minutes. Im really confused, I though that contractions would hurst all over the stomach since my uterus has grown to be that large. please explain!
Asked by Gumbygirl - Mon Mar 8 02:29:08 2010 - - 1 Answers - 0 Comments
Q. Im 39 weeks pregnant and I thought that I knew what a contraction felt like, but tonight I am feeling what seem like menstral cramps, meaning it's mostly in the lower abdomen and lower back. its happening about 1 time every 10-15 minutes. Im really confused, I though that contractions would hurst all over the stomach since my uterus has grown to be that large. please explain!
Asked by Gumbygirl - Mon Mar 8 02:29:08 2010 - - 1 Answers - 0 Comments
From Yahoo Answer Search: 'contraction'
Wed Sep 8 22:22:11 2010 [ refresh local cache ]
[Hide]▼
nzherald.co.nz
Tue, 10 Aug 2010 21:05:31 GMT+00:00
New Zealand Herald Odds of a double-dip contraction have risen to one in four from almost one in five. The most likely scenario, Moody's Analytics says, is that home values ... Home prices may fall 20% in double dip Detroit Free Press
natural-bb.de
792px x 572px | 162.20kB
[source page]
Quelle Horst de Marees Sportphysiologie Weitere Bildquellen finden sich hier und hier Weitere Infos Muskelkontraktion und
fistfulofeuros.net
Edward Hugh
Fri, 15 May 2009 09:20:33 GM
However, saying that the darkest hour in this . contraction. may be over is not the same thing as saying that recovery is anywhere in sight. Italy's manufacturing PMI has now not indicated growth since February 2008 and forecasts ...
[Hide]▲
