Blood Venous

Venous blood - (Latin sanguis, Greek σάγκος - blood; ven. vena - vein) - a type of blood in composition, function and origin, distinguished, in particular, by the absence of red blood cells. Instead, the blood is saturated with metabolic products. Compared to the arterial one, it is less saturated with oxygen and more dissolved substances, contains less hemoglobin, but more carbon dioxide. Also, venous blood differs from arterial blood in blood flow speed and circulation ability.

Despite the fact that the term “venous blood” appeared in antiquity, the difference between this type of blood and arterial blood became known thanks to English doctors of the early 19th century, who clarified the differences in the anatomical elements of the two types of blood due to their origin. Currently, the features of the composition of venous blood are well studied and known to scientists and medical practitioners.

Basic principles of blood composition