In the embryo, the thin walls of the sinus venosus are connected below with the right ventricle, and medially with the left atrium, but are free in the rest of their extent.

May 19, 2025 · The smooth part of the right atrium derived from the right horn of the sinus venosus is called the sinus venarum. The left horn develops into the coronary sinus.

Nov 6, 2025 · At the fourth week, the sinus venosus is responsible for the inflow of blood to the primitive heart, and empties into the primitive atrium. It receives venous blood from the right …

Apr 14, 1996 · The smooth tissue forms part of the atium called the sinus venarum. Crista Terminalis, a ridge of tissue located to the right of the sinoatrial oriface, forms the boundry …

The systemic venous sinus, also called the "sinus venosus", is a thin walled cavity forming the input to developing heart which has 3 venous inputs (vitelline vein, umbilical vein, common …

5 days ago · The more common sinus venosus type defect (often referred to as the "usual type") occurs in the upper atrial septum and is contiguous with the superior vena cava (SVC). The …

Sinus Venosus - an overview | ScienceDirect Topics

The sinus venosus is an embryonic heart chamber that plays a crucial role in the development of the mature heart, particularly in forming part of the right atrium and contributing to the …

A large sac, the sinus venosus, is situated below the posterior of the pharynx and collects blood from all parts of the body. The blood passes forward through the subpharyngeal ventral aorta, …

The meaning of SINUS VENOSUS is an enlarged pouch that adjoins the heart, is formed by the union of the large systemic veins, and is the passage through which venous blood enters the …