KINE 1P90 Lecture Notes - Lecture 1: Cardiac Output, Skeletal Muscle, Vasodilation
28 Feb 2018
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Document Summary
Arteries, arterioles and capillaries transport blood from the heart to the tissues. Capillaries venules and veins transport blood back to the heart. Capillaries sit in the middle, they are the connecting vessel between arteries and veins, they have an artery entry and a venous exit. By shortening the smooth muscle on the vessel wall, the arterioles can lessen their diameter. They control the resistance to blood flow. In order to pass, the membrane has to be thin: one layer of epithelial. Blood is constantly reconditioned so composition remains relatively constant. Kidneys eliminate waste and adjust water levels. Reconditioning organs receive more blood than needed for metabolic needs. Blood flow to other organs (skeletal muscle) serves only to meet their metabolic needs, and thus, it is adjusted to meet these metabolic needs, and thus, it is adjusted to meet these metabolic needs at any given time.
