aortic orifice(redirected from ostium aortae)
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1. the entrance or outlet of any body cavity.
aortic orifice the opening of the left ventricle into the aorta; called also aortic opening.
external urethral orifice urinary meatus.
internal urethral orifice the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.
left atrioventricular orifice (mitral orifice) the opening between the left atrium and ventricle of the heart.
pulmonary orifice (orifice of pulmonary trunk) the opening between the pulmonary trunk and the right ventricle of the heart; called also opening of pulmonary trunk.
right atrioventricular orifice (tricuspid orifice) the opening between the right atrium and ventricle of the heart.
ureteral orifice the opening of a ureter into the urinary bladder at one corner of the trigone of the bladder. Called also ureteral meatus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
the opening from the left ventricle into the ascending aorta; it is guarded by the aortic valve.
Farlex Partner Medical Dictionary © Farlex 2012
a·or·tic or·i·fice(ā-ōr'tik ōr'i-fis) [TA]
The opening from the left ventricle into the ascending aorta; it is guarded by the aortic valve.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012