BLOOD VESSELS REVIEW.docx

BLOOD VESSELS REVIEW: Question 1 (2 points) _______________ monitor/s blood chemistry and transmit/s signals to the brainstem respiratory centers to adjust respiratory rate to stabilize pH, CO2, and O2. Question 1 options: Aortic bodies Baroreceptors Carotid sinus Question 2 (2 points) _____________________ occur in organs that require rapid absorption or filtration (kidneys, small intestine). Question 2 options: Sinuses Fenestrated capillaries Continuous capillaries Discontinuous capillaries (sinusoids) Question 3 (2 points) ______________________ are short vessels that link arterioles to capillaries. Muscle cells form a precapillarysphincter about entrance to capillary. Question 3 options: Distributing arteries Conducting arterie s Metarterioles Large veins Muscular venules Question 4 (2 points) __________________ distribute blood to specific organs. The smooth muscle layers constitute three-fourths of wall thickness.

Question 4 options: Conducting arteries Arterioles Distributing arteries Resistance arteries Question 5 (2 points) The smallest ___________________ are the arterioles. Question 5 options: resistance arteries. metarterioles. conducting arteries. distributing arteries. Question 6 (2 points) ________________ are even more porous than capillaries. They have neither a middle tunica nor an external tunica. Question 6 options: Muscular venules Large veins Medium veins Postcapillary venules Question 7 (1 point) In the _____________________ two arteries merge and provide collateral (alternative) routes of blood supply to a tissue. Question 7 options: portal systems arterial anastomosis arteriovenous anastomosis venous anastomosis Question 8 (2 points) The ___________ secretes chemicals that stimulate dilation or constriction of the vessel.

Question 8 options: tunica media tunica externa tunica interna basement membrane endothelium Question 9 (2 points) The _________________ anchors the blood vessel and provides passage for small nerves and lymphatic vessels. Question 9 options: basement membrane endothelium tunica externa tunica interna tunica media Question 10 (2 points) The _______________________ consists of smooth muscle, collagen, and elastic tissue. It strengthens the blood vessels and prevents blood pressure from rupturing them. Question 10 options: tunica externa basement membrane endothelium tunica interna tunica media Question 11 (2 points) Capillaries are composed of _______________ Question 11 options: an endothelium and a basal lamina. a tunica interna, a tunica media. a tunica media and a tunica externa. a tunica interna, a tunica media, and a tunica externa.

Question 12 (2 points) In ___________________the endothelial cells are separated by wide gaps with no basal membrane. They allow proteins (albumin), clotting factors, and new blood cells to enter the circulation. Question 12 options: continuous capillaries sinuses fenestrated capillaries discontinuous capillaries (sinusoids) Question 13 (2 points) _____________________occur in most tissues. Endothelial cells have tight junctions forming a continuous tube with intercellular clefts allow passage of small solutes such as glucose. Question 13 options: Fenestrated capillaries Continuous capillaries Sinuses Discontinuous capillaries (sinusoids) Question 14 (2 points) ______________________ have a layer of elastic tissue, internal elastic lamina, at the border between interna and media. They have also an external elastic lamina at the border between media and externa. Question 14 options: Conducting arterie s Metarterioles Distributing arteries Large veins Muscular venules Question 15 (2 points) Aorta, common carotid, subclavian, pulmonary trunk, and common iliac arteries are Question 15 options:

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