KINE 1P90 Lecture Notes - Lecture 13: Blood Pressure, Vasodilation, Vasoconstriction
9 Mar 2016
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Document Summary
Arteries, arterioles and capillaries transport blood from heart to the issues. Capillaries venules and veins transport blood back to heart. Blood is constantly recondiioned so composiion remains relaively constant. Needs to be 50% water, can"t have a lot of waste products because it makes blood more acidic. Recondiioning organs receive more blood than needed for metabolic needs. Blood low to other organs (skeletal muscle) serves only to meet their metabolic needs an thus, it is adjusted to meet these metabolic needs at any given ime. For example, the requirements of the muscle issues during exercise can increase 15- Redistribute blood from inacive organs to acive issues. Only the absolute blood low to brain is kept constant. The volume of low through a vessel is directly proporional to the pressure gradient between the 2 ends of the vessels and inversely related to the resistance encountered.
