BVB301 Lecture Notes - Lecture 1: Orthostatic Hypotension, Baroreceptor, Jugular Vein
Document Summary
L1, l2, circulatory system & respiration and transport. Blood: carries metabolic fuel, and oxygen to the tissue. Body movement can generate blood flow in some animals. Hydrostatic pressure exerts a downward pressure on a column of fluid (humans) Orthostatic hypotension is where blood pools in the extremities. Baroreceptor reflex = vasoconstriction (narrowing of the blood vessels) What about animals that put their head up and down a lot? (ie. snakes, giraffes) Snakes: their heart is right near their head so it"s okay. Giraffe: highly specialized elastic vessels near the brain allow excess blood to pool when the head is lowered and blood pressure rises considerably. Super strong heart, very high heartrate (unusual for a large animal. Delivery of glucose and other nutrients to tissues for energy. Moves immune cells to the site of infection/immune compromise. Only allows fluid and small molecules to pass through. Allow cells, and serum protein to pass through.
