GCU BIO-202 EXAM 2 100% PASS VERIFIED Questions and Answers

GCU BIO-202 EXAM 2 100% PASS VERIFIED Questions and Answers what are the functions of an artery - ANSWER maintain blood pressure even when the heart relaxes ; carries out blood what are the functions of a vein - ANSWER returns deoxygenated blood back into heart what the functions of the arteriole - ANSWER transports blood from arteries to capillaries what are the functions of the venue - ANSWER a very small blood vessel, always allows blood to return from capillary beds to drain into larger blood vessels. what are the functions of the capillary - ANSWER the smallest of blood vessels, they distribute oxygenated blood from arteries to the tissues of the body and to feed deoxygenates blood from the tissues back into the veins. From outer to inner, 3 tunic (layers) of an artery - ANSWER 1. Tunica adventitia 2. tunica media 3. tunica intima What layer consists mostly of Smooth muscle? - ANSWER tunica media Why do larger veins have valves? - ANSWER prevent backflow What is venipuncture? - ANSWER the puncture of a vein as part of a medical procedure. Typically to withdraw a blood sample or for an intravenous injection. what is the name of the space in a blood vessel where blood flow? - ANSWER the Lumen explain the major difference between arteries and veins? - ANSWER arteries: has thicker walls to maintain blood pressure veins: have thinner walls Describe the importance of the elasticity an artery? what happens to the elasticity as one ages? How would this affect a person? - ANSWER The elasticity maintains blood pressure even when the heart relaxes. - when the heart ages the arteries becomes less elastic and they cannon relax as quickly