Atria

Revision as of 15:07, 15 October 2012 (view source) 110096537 (Talk | contribs) (Created page with "The atria (singular atrium) are the upper chambers in the heart.")		Revision as of 15:49, 15 October 2012 (view source) 110253727 (Talk | contribs) Newer edit →
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−	The atria (singular atrium) are the upper chambers in the [[Heart|heart]].	+	The atria (singular atrium) are the upper chambers in the [[Heart|heart]]. They are involved in the first stages of the cardiovascular cycle mediated by the Sinoatrial Node ([[SAN|SAN]]). A wave of depolarization sweeps over the the atria causing them to contract, which forces blood from the atria into the ventricles.

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Revision as of 15:49, 15 October 2012

The atria (singular atrium) are the upper chambers in the heart. They are involved in the first stages of the cardiovascular cycle mediated by the Sinoatrial Node (SAN). A wave of depolarization sweeps over the the atria causing them to contract, which forces blood from the atria into the ventricles.