Definition of sinus venosus in English:
sinus venosus
nounPlural sinus venosiviːˈnəʊsəsˌsīnəs veˈnōsəs
Zoology The first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
Example sentencesExamples
- Communication between the sinus venosus and the primitive atrium, the sinoatrial oriface, is centrally located.
- The two entities always go together and it is the de-roofing of the sinus venosus by the anomalous drainage of the right superior pulmonary vein that leads to the sinus venosus ASD.
- All the blood from the cardinal veins now drains into the right horn of the sinus venosus.
- Diagnostic images of the sinus venosus atrial septal defect usually are not obtainable in most adults.
- 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'.