ostium

(redirected from coronary ostium)
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ostium

[′äs·tē·əm]
(biology)
A mouth, entrance, or aperture.
References in periodicals archive ?
The larger disk closed the ostium of the aneurysm completely while keeping a safe distance from both the aortic valve and the right coronary ostium.
Levels of serotonin were evaluated in blood samples collected from the coronary ostium by using catheter without side holes.

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