front 1 During pulmonary circulation blood leaves the __________. right ventricle and moves to the lungs right ventricle and goes directly to the aorta left ventricle and moves to the lungs right atrium and goes directly to the lungs right atrium and goes directly to the left ventricle | back 1 a |
front 2 During systemic circulation, blood leaves the __________. left ventricle and goes directly to the aorta right ventricle and goes directly to the aorta right atrium and goes directly to the lungs right ventricle and moves to the lungs lungs and moves to the left atrium | back 2 a |
front 3 The endothelium is composed of __________. simple columnar epithelium tunica media muscle cells stratified squamous epithelium simple squamous epithelium simple cuboidal epithelium | back 3 d |
front 4 The inferior vena cava brings blood from the lower regions of the body and empties into the __________. left ventricle right atrium aorta left atrium right ventricle | back 4 b |
front 5 Which of the following is the correct sequence of layers in the vessel wall from outside to inside? tunica externa, tunica media, tunica intima tunica intima, tunica externa, tunica media tunica media, tunica intima, tunica externa tunica intima, tunica externa, tunica media It varies from vessel to vessel. | back 5 a |
front 6 The major long-term mechanism of blood pressure control is provided by the __________. the lungs the heart kidneys the digestive tract paravertebral ganglia | back 6 c |
front 7 Exchange of gases and nutrients occurs by diffusion between the __________. arterioles and tissue cells arterioles and venules arteries and veins artery walls and tissue cells capillaries and tissue cells | back 7 e |
front 8 Any condition in which blood vessels are inadequately filled and blood cannot circulate normally is called __________. hypertension varicose veins circulatory shock atherosclerosis arteriosclerosis | back 8 c |
front 9 Reduction in the lumen diameter of a blood vessel as the smooth muscle contracts is known as __________. varicose veins vasodilation atherosclerosis vasoconstriction arteriosclerosis | back 9 d |
front 10 The only vessels that provide direct access to nearly every cell in the body are the __________. venules capillaries arterioles arteries veins | back 10 b |
front 11 Which of the following regulates blood flow at the entrance to each true capillary? tunica intima valves lymph nodes precapillary sphincter tunica externa | back 11 d |
front 12 Loss of vasomotor tone that results in a huge drop in peripheral resistance is known as __________. varicose veins atherosclerosis vasoconstriction vascular shock hypertension | back 12 d |
front 13 Which of the following arteries branches to form the common hepatic artery, left gastric artery, and splenic artery? gonadal arteries inferior mesenteric artery descending aorta superior mesenteric artery celiac trunk | back 13 e |
front 14 Which of the following veins is the longest in the body? superior vena cava femoral vein inferior vena cava great saphenous vein hepatic portal vein | back 14 d |
front 15 Which of the layers of an artery wall is regulated by the sympathetic nervous system and many hormones? inner layer middle layer subendothelial layer outer layer | back 15 b |
front 16 Which of the following types of blood vessels have the proportionally thickest tunica media of all vessels? elastic arteries distributing arteries vasa vasorum arterioles | back 16 b |
front 17 __________ inhibits fibrinolysis by competing with plasminogen and may contribute to the formation of atherosclerotic plaques. Foamy macrophages Cholesterol Cytomegalovirus Lipoprotein (a) | back 17 d |
front 18 The minute-to-minute blood flow through the capillary beds is determined by the __________. elastic lamina on both sides of the tunica media in muscular arteries diameter of arterioles constriction of elastic arteries number of elastic fibers in conducting arteries | back 18 b |
front 19 The presence of __________ stabilizes the wall of capillaries. gap junctions pericytes elastic fibers valves | back 19 b |
front 20 All but which of the following blood vessels contain intercellular clefts? sinusoidal capillaries arterioles fenestrated capillaries continuous capillaries | back 20 b |
front 21 The flow of blood from the left ventricle to the right atrium is called the __________. systemic circulation microcirculation pulmonary circulation hepatoportal circulation | back 21 a |
front 22 A metarteriole is a vessel that __________. auxiliary channel drains the capillary bed is intermediate between a capillary and a venule is intermediate between the arteriole and the capillary bed | back 22 c |
front 23 Which of the following conditions would NOT increase the chances of developing varicose veins? pregnancy standing to attention for long periods of time a potbelly in an obese person running in place | back 23 d |
front 24 Up to 65% of the body's blood supply is found in __________. veins arteries capillaries arterioles | back 24 a |
front 25 All of the following are examples of venous sinuses EXCEPT __________. carotid sinuses dural sinuses coronary sinuses venous sinuses | back 25 a |
front 26 Most neural controls of blood pressure involve input from baroreceptors, which are sensitive to __________. the constriction of capillary beds to changes in blood pressure the level of oxygen in the blood the level of carbon dioxide in the blood | back 26 b |
front 27 An elastic lamina on both sides of the tunica media is a characteristic of __________. muscular arteries elastic arteries all arteries conducting arteries | back 27 a |
front 28 Which of the following blood vessels is the most susceptible to atherosclerosis? the femoral artery the cerebral arteries the pulmonary arteries the aorta | back 28 d |
front 29 Which of the following is the major force generating blood flow? blood vessel diameter blood viscosity peripheral resistance pumping action of the heart total blood vessel length | back 29 d |
front 30 Blood enters the myocardium of the heart by coronary vessels that originate from the __________. inside of the ventricles pulmonary artery aorta superior vena cava pulmonary veins | back 30 c |