Dictionary > Sinus venosus

Sinus venosus

Definition
noun
In embryo, the cavity caudad of cardiac tube where the veins from the intra- and extraembryonic circulatory arcs meet, and receives blood from the vitelline vein, umbilical vein, and common cardinal vein
Supplement
In mammals, the sinus venosus is distinct in the heart of an embryo. As the embryo develops, the sinus venosus forms a part of the right atrium called sinus of the vena cava.
In other chordates such as fish, amphibians, and reptiles, the sinus venosus persists in adult. It is the chamber receiving blood from veins, and then passing blood into the atrium.
Synonym(s):

  • saccus reuniens


You will also like...

Schematic diagram of DNA replication
DNA Structure & DNA Replication

DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

IQ, Creativity and Learning
IQ, Creativity and Learning

Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

bryophyte - sporophyte and gametophyte
Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

Community Patterns

Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..

Balanced Diet
A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

Non-Mendelian Inheritance
Non-Mendelian Inheritance

In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..