Struction and functions of arteries, veins etc
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Pressure Filtration
Pressure filtration causes plasma to pass through capillary walls into the tissue fluid surrounding the cells.
Tissue Fluid
Tissue fluid supplies cells with glucose, oxygen and other substances. Carbon dioxide and other metabolic wastes diffuse out of the cells and into the tissue fluid to be excreted. Much of the tissue fluid returns to the blood.
Lymphs
Lymphatic vessels absorb excess tissue fluid and return it as lymph to the circulatory system.
The exchange of materials between tissue fluid and cells through pressure filtration and the role of lymphatic vessels.
Pressure filtration causes plasma to pass through capillary walls into the tissue fluid surrounding the cells. Tissue fluid supplies cells with glucose, oxygen and other substances. Carbon dioxide and other metabolic wastes diffuse out of the cells and into the tissue fluid to be excreted. Much of the tissue fluid returns to the blood. Lymphatic vessels absorb excess tissue fluid and return it as lymph to the circulatory system.
Tissue Fluid and Plasma
Tissue fluid and blood plasma are similar in composition, with the exception of plasma proteins, which are too large to be filtered through the capillary walls.
Arteries, veins and capillaries in first dec
Done
Vasoconstriction and Vasodilation
To control blood flow, the smooth muscle surrounding arteries can contract causing vasoconstriction or relax causing vasodilation. Relax, large lumen and high blood flow and vice versa.