laskimokapasiteetti

Laskimokapasiteetti refers to the ability of the veins to store blood. Veins, particularly those in the periphery, are highly distensible and can hold a significant volume of blood, acting as a reservoir for the circulatory system. This capacity is dynamic and can change based on various physiological conditions.

When the body requires more blood to be circulated, such as during exercise, the veins can constrict, reducing their capacity and pushing more blood into the arterial system. Conversely, when blood volume increases, such as after fluid intake, veins can expand to accommodate the extra volume without a significant rise in venous pressure. This elastic property of veins is crucial for maintaining blood pressure and regulating blood flow to vital organs.

Factors influencing laskimokapasiteetti include the tone of the smooth muscle in the venous walls, the overall blood volume, and the effects of hormones and the autonomic nervous system. Conditions that affect venous tone, like certain medications or diseases, can alter the blood storage capacity of the veins. Understanding laskimokapasiteetti is important in comprehending cardiovascular physiology and the body's response to changes in blood volume and pressure.