S-A node


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Related to S-A node: AV node

S-A node

abbreviation for sinuatrial node.
Farlex Partner Medical Dictionary © Farlex 2012

S-A node

(ĕs′ā′)
n.
The sinoatrial node.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.