aortic ostium

n.

The opening from the left ventricle of the heart into the ascending aorta, guarded by the aortic valve.

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Words nearby aortic ostium

aortic bulb, aortic foramen, aortic insufficiency, aortic murmur, aortic notch, aortic ostium, aortic plexus, aortic septal defect, aortic sinus, aortic stenosis, aortic valve
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.