Kinesiology 2230A/B Lecture Notes - Lecture 6: Baroreceptor, Blood Doping, Erythropoietin
12 Oct 2017
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Amount of blood in system depends on size. Blood volume at rest = around 5l. Vo2 of the brain can double during cerebral activity (20w) Has ability to change radius - dictates blood pressure stores 13% of blood at rest: smaller radius = greater pressure larger radius = less pressure. Capacitance vessels =tremendous capacity to store blood since can vasodilate to store blood: where most of blood capacity is located at rest. At rest: most of the blood is stored here (64%) and not moving: blood pools on venous side. At the onset of exercise, veins can vasoconstrict veins get smaller and push the blood back to the heart. O2 has been offloaded from hb: key objective heart = deliver o2 to tissue, key objective of tissue = offload the o2 from hb to use at the tissue/working muscle. Right side of heart carries deoxygenated blood from the body -
