How Do You Spell SINUS VENOSUS?

1. Sinus venosus refers to a specific anatomical structure found in the human body, particularly in the heart. It is a small, thin-walled chamber located in the posterior part of the right atrium, which is one of the four chambers of the heart.

   The sinus venosus acts as a collecting chamber for deoxygenated blood returning to the heart. It is directly connected to the venae cavae, which are the large veins that bring deoxygenated blood from the body to the heart. The superior vena cava brings blood from the upper body, while the inferior vena cava brings blood from the lower body. These major veins empty into the sinus venosus, allowing blood to flow into the right atrium for further circulation.

   During development, the sinus venosus plays an essential role in cardiac anatomical formation. It contributes to the development of various structures within the heart, including the sinoatrial (SA) node, which serves as the heart's natural pacemaker.

   However, it is important to note that the term "sinus venosus" can also be used in a pathological context. In this case, it refers to a congenital heart defect where a communication exists between the right atrium and the systemic venous structures, disrupting normal blood flow patterns. This can lead to several complications, such as the mixing of oxygenated and deoxygenated blood.

2. Saccus reuniens, the posterior of the four dilatations of the primitive tubular heart; the cavity at the posterior end of the cardiac tube in the embryo, in which the veins from the body unite; in the course of development it forms the termination of the venae cavae, the portion of the right auricle between the orifices of these vessels, and the coronary sinus.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for SINUS VENOSUS

The word sinus venosus has Latin origins.

In Latin, sinus means curve, bay, or fold. It can also refer to a small cavity or a hollow area. Venosus means vein-like or pertaining to veins.

In anatomical terminology, sinus venosus refers to a specific structure within the heart. It is a temporary embryonic cardiac structure that eventually develops into the venous end of the heart, including the smooth-walled part of the right atrium and the coronary sinus.

Overall, sinus venosus can be translated to mean something like vein-like curve or venous cavity.