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Fenestrated capillaries


A) have pores in their walls.
B) permit the movement of very few molecules.
C) are located in the central nervous system.
D) occur in most of the organs of the body.

E) All of the above
F) A) and D)

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Present in most capillaries, these structures are absent in those of the blood-brain barrier.


A) basement membrane
B) endothelial cells
C) tight junctions
D) pericytes
E) intercellular clefts

F) None of the above
G) A) and D)

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Which branch (or branches) of the abdominal aorta supplies the stomach?


A) suprarenal arteries
B) inferior phrenic arteries
C) celiac trunk
D) superior mesenteric artery

E) B) and D)
F) B) and C)

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The pulse of the posterior tibial artery is palpated behind the knee.

A) True
B) False

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Structure that regulates blood flow into true capillaries.


A) fenestrations
B) metarteriole
C) thoroughfare channel
D) sinusoids
E) precapillary sphincter

F) B) and C)
G) A) and E)

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The largest blood vessels near the heart have their own blood supply network called the .

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  Figure 20.1 Use the diagram above to answer the following questions. -Identify the letter that indicates the blood vessel layer that is comprised of circular and longitudinal smooth muscle. A)  A B)  B C)  C D)  D E)  E Figure 20.1 Use the diagram above to answer the following questions. -Identify the letter that indicates the blood vessel layer that is comprised of circular and longitudinal smooth muscle.


A) A
B) B
C) C
D) D
E) E

F) C) and D)
G) B) and C)

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Microvasculature that provides nourishment to the outer walls of the aorta.


A) tunica externa
B) tunica media
C) subendothelial layer
D) vasa vasorum
E) tunica intima

F) All of the above
G) A) and B)

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Of the following, the only unpaired dural sinus is the


A) transverse sinus.
B) carotid sinus.
C) superior sagittal sinus.
D) cavernous sinus.

E) B) and C)
F) A) and C)

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The right suprarenal and gonadal veins drain into the inferior vena cava, whereas the left suprarenal and gonadal veins drain into the


A) left renal vein.
B) other side of the inferior vena cava.
C) hepatic portal system.
D) superior vena cava.

E) A) and B)
F) A) and C)

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The correct proximal to distal sequence of the three vessels branching from the aortic arch is


A) brachiocephalic, left subclavian, left common carotid.
B) brachiocephalic, left common carotid, left subclavian.
C) left common carotid, left subclavian, brachiocephalic.
D) left subclavian, left common carotid, brachiocephalic.

E) A) and D)
F) A) and C)

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Which of the following is most likely to become a varicose vein?


A) the femoral vein
B) the popliteal vein
C) the fibular (peroneal) vein
D) the saphenous vein

E) A) and D)
F) B) and D)

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