Match each vascular structure to its function or characteristic. Terms may apply to more than one question. Some terms may not be used.
a.arteries
i.sinusoids
b.tunica externa
j.tunica media
c.capillaries
k.capacitance vessels
d.tunica intima
l.distributing arteries
e.lumen
m.conducting arteries
f.resistance vessels
n.metarterioles
g.medium-sized veins
o.large veins
h.venules
p.arterioles
-Which best explains how the vascular system maintains blood pressure?
A) Arterioles dilate or constrict to provide the correct amount of resistance to blood flow.
B) Medium-sized veins constrict to help maintain blood pressure when blood pressure drops.
C) Distributing arteries carry blood evenly throughout the body to maintain a stable blood pressure.
D) Veins and arteries work together to maintain blood pressure at or near 110/70 mm Hg.

Question

Quizplus · Accepted Answer

Arterioles dilate or constrict to provide the correct amount of resistance to blood flow, which helps maintain blood pressure.

Answer: D 
 Veins and arteries work together to maintain blood pressure at or near 110/70 mm Hg. However, the specific mechanism by which they do so is through the dilation or constriction of arterioles.

Answer: I 
 Sinusoids are specialized capillaries found in certain organs, such as the liver and spleen, that allow for the exchange of large molecules and cells.

Answer: K 
 Capacitance vessels, such as veins, have the ability to store and release large amounts of blood as needed, which helps regulate blood pressure.

Answer: P 
 Arterioles are small vessels that are able to regulate blood flow and pressure by dilating or constricting in response to various stimuli.

Match Each Vascular Structure to Its Function or Characteristic