State Correct Arteries Terms Flashcards

1) Muscular arteries A) serve as the cushion to prevent sudden rises in blood pressure from causing trouble for the circulation. B) are larger than elastic arteries and smaller than arterioles. C) are exemplified by the external carotid, brachial, and femoral arteries. D) have a thick tunica media with a large amount of smooth muscle fiber within them. E) have the attributes of C and D.

2) Large arteries that tend to branch after a short distance are called A) metarteries. B) muscular arteries. C) trunks. D) anastomoses. E) none of the above.

3) Which is the layer of the arterial wall that thickens to the greatest degree in atherosclerosis? A) tunica externa B) tunica media C) tunica adventitia D) tunica interna E) All of the above thicken equally.

4) Which of the following is common around joints? A) precapillary sphincter B) metarteriole C) preferred channels D) central channel E) collaterals

5) Which of the following is true of an artery? A) Blood flow through a capillary is the slowest of all classes of vessels. B) It has a relatively thick tunica media. C) The vessel walls are relatively thin. D) The histological structure of a capillary wall permits a two- way exchange of substances between the blood and body cells. E) There are no exceptions; all of the above are true.

6) Another name for elastic arteries is A) distributing arteries. B) small arteries. C) muscular arteries. D) conducting arteries. E) none of the above.

7) The total length of blood vessels in the body is estimated to be A) thousands of miles. B) 30 feet. C) 1 mile. D) over a million miles. E) none of the above.

8) Because of their proximity to the surface, ________ are usually used to obtain blood samples. A) venules B) deep veins C) superficial veins D) jugular veins E) none of the above

9) The outermost layer of a blood vessel is (the) A) endothelium. B) tunica intima. C) tunica media. D) tunica externa. E) none of the above.

10) Capillaries that have a complete lining are called A) sinusoids. B) sinusoidal capillaries. C) fenestrated capillaries. D) continuous capillaries. E) lacteals.

11) What is the significance of the presence of two sets of veins, one superficial and the other deep, in the neck and extremities? A) These vessels have a completely different distribution and so must be located far from one another. B) There is no known significance for this phenomenon. C) This distribution is important for regulation of body temperature. D) This placement is important in the regulation of the distribution of hormones in the circulation. E) A and D from above are correct.

12) A very thick connective tissue sheath, primarily composed of collagen fibers with scattered bands of elastic fibers, that blends into the surrounding tissues and assists in anchoring the blood vessel, is (the) A) capillary wall. B) tunica externa. C) tunica media. D) external elastic membrane. E) none of the above

13) A major difference between the arterial and venous systems is that A) in the limbs there is dual venous drainage. B) arteries are usually more superficial than veins. C) veins are usually less branched than arteries. D) all of the above are true. E) none of the above true.

14) Which structures or processes prevent excessive loss of blood pressure during severe bleeding? A) venoconstriction B) arteriovenous anastomoses C) venous valves D) arteriosclerosis E) vasodilation

15) Blood vessel names tend to change at A) branching points. B) anatomic boundaries. C) connections with other vessels. D) all of the above. E) none of the above.