Dictionary » V » Ventricles



chambers of an organ. For example, the four connected cavities (hollow spaces) in the central brain or the four chambers of the heart.

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A.V. node

... this is a grade 11 question quite frankly. I'll be generous and sauce you an answer, it's the pace setter because it Delays the contraction of the ventricles to ensure that the atria have pumped its blood into them. Don't ask a bunch of questions without showing that you atleast have some clue ...

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by Gilby101
Sun Apr 29, 2012 12:04 pm
Forum: General Discussion
Topic: A.V. node
Replies: 1
Views: 1714

Heart chambers

Why the auricles are smaller in size than ventricles?

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by anamikariya
Sun Apr 29, 2012 10:22 am
Forum: General Discussion
Topic: Heart chambers
Replies: 0
Views: 806

The Heart

... 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 themselves before the atria contract to fill them up again). The SA node's also known as the pacemaker since it sets the rate at ...

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by Babybel56
Sat Apr 23, 2011 8:26 pm
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 11711

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

During a complete bundle branch 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 ...

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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: 6244

Re: Please Help - The Heart

... you look fine. I'm surprised you didn't learn the name "Purkinje fibers" for the tissue that conducts the impulse the the bottom of the ventricles, but what's in a name, eh? ;) Anyway, the AV node is what "gathers" and slightly delays the impulse and conducts it to the 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: 8886
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