Definition of sinus venosus in English:

Share this entry

sinus venosus

Pronunciation: /ˌsīnəs veˈnōsəs/

noun

Zoology
The first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
Example sentences
  • Communication between the sinus venosus and the primitive atrium, the sinoatrial oriface, is centrally located.
  • All the blood from the cardinal veins now drains into the right horn of the sinus venosus.
  • Sino-septal defects refer to those that involve the area of the atrial septum derived from the sinus venosus.

Origin

Early 19th century: modern Latin, literally 'venous cavity'.

For editors and proofreaders

Syllabification: si·nus ve·no·sus

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.