BIOL 322 Exam 3 Quiz Questions and Correct Answers

Exercise a) resets the baroreceptor reflex to the right b) does not reset the baroreceptor reflex c) resets the baroreceptor reflex to the left a) resets the baroreceptor reflex to the right Increasing total peripheral resistance a) increases diastolic pressure b) does not affect diastolic pressure c) decreases diastolic pressure a) increases diastolic pressure Which two B vitamins are necessary for the production of thymine? a) riboflavin (B2) b) folate (B9) c) pantothenic acid (B5) d) niacin (B3) e) thiamine (B1) f) cobalamin (B12) folate (B9) and cobalamin (B12) b and f What protein links platelets in a platelet plug? fibrinogen The clotting cascade in the body is normally started by a) the final common pathway b) the extrinsic pathway c) the intrinsic pathway b) the extrinsic pathway Which of the following is NOT a function of the pulmonary system? a) phonation b) helping to maintain acid/base balance c) regulating blood oxygen concentration d) all of these are functions of the pulmonary system e) helping to maintain sodium balance f) helping to prevent blood clots leading to a heart attack or stroke g) regulating the concentration of some chemical messengers e) helping to maintain sodium balance Which of the following limit platelet plug expansion? a) thromboxane A2 b) heparin c) plasmin d) tissue factor pathway inhibitor e) antithrombin III f) endothelin-1 g) prostacyclin h) nitric oxide prostacyclin and nitric oxide g and h What protein clotting factor acts as a cofactor for factor X? Factor V Which activator of plasminogen is often used clinically to dissolve clots? (full name) tissue plasminogen activator