What is a capillary bed?
The capillary bed is a concentration of capillaries that supply blood to a specific organ or body area. The capillary density in the capillary bed may vary depending on the requirements of the area it supports. Capillary beds are an important part of the circulatory system, which indicates the point where the circulation reaches its terminal and loops back to allow blood to pass through the heart and reoxygenated so that it can return to circulation. Arterioles bring blood from the heart that is rich in oxygen and nutrients, while venules carry blood that has become deoxygenated back to the heart. On any day, blood circulates many times throughout the circulatory system to supply the body cells with the necessary oxygen and nutrients. Although the circulatory system may seem like a closed network of tubes, the capillaries are actually permeable, allowing the substances to go to and out of the capillary through a thin membrane. In organs with the requirements for heavy nutrients and oxygen, aso are the liver, the capillary bed can be quite extensive, because at a given moment usually holds around 25% of the blood it can contain.
Sometimes the capillary bed is clearly visible. The capillary bed under the nails is an excellent example. Normally, the nails seem slightly rinsed due to the blood that circulates under them. If there is a fine pressure on the nail, the blanch will be white for a moment before the blood flows back into the capillary bed, allowing the nail to regain normal flushing. This reaction can be MyED to assess the health of the circulatory system; If it takes a long time for blood to return to the nail, it may indicate that someone has a problem with the circulatory system. Similarly, if the fingers turn red, it means that blood is not surprising and that deoxygenated blood will be connected in the nails.
prolonged lack of circulation can lead to serious complications as waste materials accumulate without a waydisposal. The cells around the capillary bed can eventually die of lack of fresh nutrients and the accumulation of waste, resulting in necrosis. If tissue death is extensive, it can lead to the need for amputation or excision, as when people develop strong frostbite and lose their fingers.