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Atrial

Atrial

(Science: anatomy) Pertaining to an atrium.


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I need help about cardiovascular system.

... is lower pressure. (True) 2/ The placenta provides O2 and nutrition to the umbilical vein. (False) 3/ the fastest pacemakers are found in the left atrial wall (F) 4/ The left ventricular wall is thicker than the right one because it pumps more blood, further each contraction (F) 5/ The allantoic ...

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by kingofgameyg
Wed Apr 18, 2012 3:11 am
 
Forum: Human Biology
Topic: I need help about cardiovascular system.
Replies: 2
Views: 1816

Re: Are the cells in are body constantly being renewed

... from the liver or kidneys. Those many cells that are sloughed off from our skin each day certainly die. It is of interest that there is an atrial fibrulation drug that cannot be excreted either by the liver or from the kidneys. It accumulates, and its toxicity regulates the heart beat, ...

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by charles brough
Wed Aug 17, 2011 7:51 pm
 
Forum: General Discussion
Topic: Are the cells in are body constantly being renewed
Replies: 13
Views: 8927

The Heart

Okay I'll do the 4. questions first because I'm relatively sure I can answer them correctly. The SA node sends a signal via the atrial-ventricular node (AV) down the purkinje fibres in the centre of the heart, causing it to contract from the bottom upwards (so the ventricles can empty ...

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by Babybel56
Sat Apr 23, 2011 8:26 pm
 
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 8750

The Heart

... 4. Enervated simply means that nerves are attached, so in this case both parasympathetic and sympathetic nervous fibres are linked to the sino-atrial node. The nervous system uses action potentials to pass on signals, and these pass on the signals to effectors (such as cardiac muscle) via neuromuscular ...

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by Babybel56
Sat Apr 23, 2011 6:51 pm
 
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 8750

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: 2849
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