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Systole

Systole

(Science: physiology) The time at which ventricular contraction occurs.

systole is the contraction of the chambers of the heart, driving blood out of the chambers. The chamber most often discussed is the left ventricle. However, all four chambers of the heart undergo systole and diastole in a timed fashion so that blood is propelled forward through the cardiovascular system.


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heart - systole/diastole on graph?

Hello, I was given an assignment to label the following graph with atrial systole, atrial diastole, ventricular systole and ventricular diastole. They are gram/sec graphs measured on frog heart. Can someone help me with it? I cannot decide whether it is starting ...

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by smoutera
Sun Mar 27, 2011 5:01 pm
 
Forum: Physiology
Topic: heart - systole/diastole on graph?
Replies: 0
Views: 3072

I'm not sure of my answer and pls help and explain

... block, many ectopic pacemakers in the ventricles may take over the action of the SA node. The EKG may show which of the following? A. Artial systole B. Ventricular diastole C. Ventricular bradycardia D. Ventricular fibrillation If there is a block of the electrical current at the AV node, ...

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by mslazy
Mon Nov 15, 2010 5:12 am
 
Forum: General Discussion
Topic: I'm not sure of my answer and pls help and explain
Replies: 1
Views: 5614

heart

In the graph for pressure changes in the heart, only the ventricular systole and diastole is being labeled. I would like to know where is the atrial systole and atrial diastole??

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by haha33
Fri Oct 29, 2010 1:42 pm
 
Forum: General Discussion
Topic: heart
Replies: 2
Views: 1657

Heart : Difference between tricuspid and bicuspid valves ?

... has a smaller diameter than the right ventricle, is because the muscle around the left ventricle is so much thicker, in order to power the strong systole contraction needed to generate sufficient pressure to drive the oxygenated blood out ofthe left ventricle up through the aorta and around the ...

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by Julie5
Sun Oct 24, 2010 10:45 am
 
Forum: Human Biology
Topic: Heart : Difference between tricuspid and bicuspid valves ?
Replies: 3
Views: 30136

Re: Please Help - The Heart

... 5. Can you please tell me if these are correct? 2. bundles and conductive fibers 3. atrioventricular node 5. autonomic nervous system 9. atrial systole 10. ventricular systole I think your #2 and #3 are reversed. Otherwise you look fine. I'm surprised you didn't learn the name "Purkinje ...

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by mamoru
Mon Feb 22, 2010 1:29 am
 
Forum: General Discussion
Topic: Please Help - The Heart
Replies: 5
Views: 7344
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