coronary sinus

American  

noun

Anatomy.

1. a large venous channel in the heart wall that receives blood via the coronary veins and empties into the right atrium.

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Etymology

Origin of coronary sinus

First recorded in 1825–35

Example Sentences

It is delivered through a catheter to the coronary sinus, where it is then expanded with a balloon, blocking flow through most of the vessel except for a small central orifice.

From Forbes • Feb. 5, 2015

A small study published in the New England Journal of Medicine raises the possibility that a new and novel device one day may provide them some relief. The experimental device, called the Neovasc Reducer, is a coronary sinus reducer system.

From Forbes • Feb. 5, 2015

The two major systemic veins, the superior and inferior venae cavae, and the large coronary vein called the coronary sinus that drains the heart myocardium empty into the right atrium.

From Textbooks • Jun. 19, 2013

Cardiac veins parallel the small cardiac arteries and generally drain into the coronary sinus.

From Textbooks • Jun. 19, 2013

The left part of the sinus venosus, which does not enlarge at the same rate as the right part, remains as the coronary sinus.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" by Various