The human vascular system is one of the most complex and interesting systems. It consists of vessels that carry oxygen and nutrients to organs and tissues, and also remove carbon dioxide and other metabolic products. The vessels that bring blood into the human body are called afferent arteries, or afferent vessels. One of these vessels is the bringing vessel.
The afferent vessel (arteriola afferentia) is a small arteriolar vessel that carries blood from capillaries to large vessels. This vessel is an important element of the capillary network, which ensures the transfer of oxygen and other nutrients to the body's cells. It also has the function of removing excess blood from the capillary networks to avoid blood oversaturation.
The function of the afferent vessel is to transport fresh, oxygen-rich blood from the microvasculature to the right and left parts of the heart. Oxygen is transported to the right half of the heart through the afferent vein in the pulmonary circulation passing through the lungs. Hemoglobin deficiency in venous blood leads to complete “washing out” of hemoglobin from red blood cells, changing their shape and increasing their size. Oxygen is also transferred from erythrocyte forms of hemoglobin to agglutinates. The blood becomes more viscous. When it enters the lungs, hemoglobin is oxidized and the oxygen content in the blood decreases.