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Contractility

Contractility

capacity for becoming short in response to a suitable stimulus.


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Re: The Heart

Thanks for the quick reply. ^_^ 1) Contractility is defined as the ability of the muscles of the heart to contract in the presence of a stimulus. Now I'm trying to understand why that would increase or decrease SV (how much blood gets pumped ...

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by BioJunior
Sat Apr 23, 2011 7:26 pm
 
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 9885

Help with the Heart!!

... locate the answers to: 1) The sum of the forces that the ventricle must contract against to make blood flow forward would be...? 2) Elasticity and contractility are properties of: veins, capillaries, venules, arteries, or the coronary sinus? 3) The myocardium does not contain which of the following: ...

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by amanderkinz
Mon Feb 28, 2011 3:04 am
 
Forum: Physiology
Topic: Help with the Heart!!
Replies: 2
Views: 4269

Re: Regulation of a heartbeat

... rate and force of contraction Conditions that lead to parasympathetic stimulation like lead to decrease heart rate but have nothing to do with contractility as no innervation to muscles of atria and ventricles There are other factors which contribute to heart rate regulation like direct action ...

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by sanjidcapa
Tue May 05, 2009 9:18 am
 
Forum: Physiology
Topic: Regulation of a heartbeat
Replies: 2
Views: 13875

Re: Vagus Nerve

... inhibitor, and the sympathetic nerves are the cardiac excitors. Stimulation of the vagus nerve depresses the rate of impulse formation and atrial contractility and thereby reduces cardiac output and slows the rate of the... * human digestive system ( in human digestive system: Blood and nerve ...

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by sanjidcapa
Tue May 05, 2009 9:15 am
 
Forum: Human Biology
Topic: Vagus Nerve
Replies: 19
Views: 167240

Regulation of a heartbeat

... force of contraction Conditions that lead to parasympathetic stimulation like (rest state) lead to decrease heart rate but have nothing to do with contractility as no innervation to muscles of atria and ventricles there are other factors which contribute to heart rate regulation like direct action ...

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by MohammedAmer
Wed Apr 22, 2009 4:45 pm
 
Forum: Physiology
Topic: Regulation of a heartbeat
Replies: 2
Views: 13875
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