Biology 2601A/B Lecture : Closed Circulatory Systems study guide that includes all the notes and relevant pictures from lecture as well as additional notes from the assigned readings
16 Oct 2011
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Document Summary
Blood is delivering o and nutrients and is picking up the waste products to deliver them to the kidneys (or lungs if it is co ) When linear flow rate is reduced, is due to the cross-sectional area increasing ( in radius = flow rate) Muscular, elastic thick walls (smooth muscle and elastin) Very elastic, which it needs to be so can stretch when receives blood from the heart; therefore allows storage of some elastic energy (in artery wall), and dampens the pressure differences. Ex: aorta, carotid artery, femoral artery (16/10kpa) Relatively high pressure as enter heart, but drops as radius "s. Arteries become smaller as they branch out towards the periphery of the circulatory system; walls of the arteries also become thinner (tension "s too) The systemic arteries ultimately deliver blood to networks of microscopically tiny blood vessels in all the systemic organs & tissues. Consists of 3 types of vessels: 1.
