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.

---

Etymology

Origin of coronary sinus

First recorded in 1825–35

Example Sentences

In addition, the right atrium receives blood from the coronary sinus which drains deoxygenated blood from the heart itself.

From Textbooks • Jun. 9, 2022

Once in place the device causes an increase in coronary sinus pressure that appears to relieve angina, though the authors acknowledge that the “physiological rationale for a beneficial effect… remains unclear.”

From Forbes • Feb. 5, 2015

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

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