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A capillary is a small blood vessel, from 5 to 10 micrometres in diameter, and is part of the microcirculation system. Capillaries are microvessels and the smallest blood vessels in the body.
Capillary bed Diagram of capillary network joining the arterial system with the venous system. The systemic circulation is a circuit loop that delivers oxygenated blood from the left heart to the rest of the body through the aorta.
English: Veins and Capillaries Tissue fluid is the liquid component of blood that flows past the capillary wall to bathe tissue cells. Water, sugars, salts, fatty acids, amino acids, coenzymes, and hormones, as well as waste products from the cells, make up the majority of it.
The second sector is the capillary sector, which is represented by the capillaries, where substance and gas exchange between blood and interstitial fluid takes place. Finally, the post-capillary sector is represented by the post-capillary venules, which are formed by a layer of endothelial cells that allow free movement of some substances. [3]
Diagram of the circulation related to a single glomerulus, associated tubule, and collecting system. The glomerulus receives its blood supply from an afferent arteriole of the renal arterial circulation. Unlike most capillary beds, the glomerular capillaries exit into efferent arterioles rather than venules.
Blood vessels function to transport blood to an animal's body tissues. In general, arteries and arterioles transport oxygenated blood from the lungs to the body and its organs, and veins and venules transport deoxygenated blood from the body to the lungs. Blood vessels also circulate blood throughout the circulatory system.
This blood leaves the glomerulus via the efferent arteriole, which supplies the peritubular capillaries. The higher osmolarity of the blood in the peritubular capillaries creates an osmotic pressure which causes the uptake of water. Other ions can be taken up by the peritubular capillaries via solvent drag. Water is also driven into the ...
Diagram of the circulatory system. SVC/IVC - Superior/Inferior vena cava, The heart is the driver of the circulatory system, pumping blood through rhythmic contraction and relaxation. The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO).