kapillæråpning
Kapillæråpning, or capillary opening, refers to the small pore or passage that allows fluid to enter or exit a capillary blood vessel. These openings are crucial for the exchange of substances between the blood and the surrounding tissues. The size of these openings can vary depending on the type of capillary and the physiological conditions. In most systemic capillaries, the openings are relatively small, allowing for the passage of small molecules like water, ions, and glucose, while larger components like red blood cells and plasma proteins are retained within the vessel.
In certain specialized capillaries, such as those found in the kidneys (glomerulus) or the liver (sinusoids),
The regulation of capillary opening is influenced by various factors, including hormonal signals and local metabolic