BIOL 1080 Lecture Notes - Lecture 10: Pulmonary Artery, Pulmonary Vein, Bone Marrow
Document Summary
Blood: fluid that circulates thru body & carries materials b/w cells ie communication! Extracellular fluid & lymphatics (parallel to cardiovasc, resp. for draining/immune cell delivery) Kidney (erythropoietin, filtering) & spleen (reservoir for red blood cells & some white blood cells) Liver (filtering, digestion, glycogen storage imp. in exercise) Bone marrow (pool of stem cells to generate other cells) Deox. bld returns to right (pulmonary) side of heart. Ox. bld leaves left (systematic) side of heart. Note the deox. bld in the pulmonary artery, & the ox. bld in the pulmonary vein. 60% systemic veins & venules (15% systemic arteries & arterioles, 12% pulmonary blood vessels, 8% heart, 5% capillary) Air bubbles in artery side could cause blockage/damage/potentially death. Arteries thick musc. walls deigned to handle high pressures in arterial blood. Arterioles less muscle bc less pressure, but lots of innervation (can relax & contract) to control smooth muscle contraction ie vessel diameter.
