Blood Vessels and Circulation Test
with Solution
arteries - CORRECT ANSWER✅✅✅efferent vessels, carry blood away from the heart;
pressure reservoirs; maintain flow
arteriole - CORRECT ANSWER✅✅✅Any of the small terminal twigs of an artery that ends
in capillaries; resistance vessels; direct flow
capillaries - CORRECT ANSWER✅✅✅Microscopic vessel through which exchanges take
place between the blood plasma and the interstitial fluid of the body; are permeable; extensively
branched
venule - CORRECT ANSWER✅✅✅-Any of the minute veins connecting the capillaries
with the larger systemic veins
-collection vessels
-send blood back to veins
veins - CORRECT ANSWER✅✅✅Blood vessels that carry blood back to the heart; volume
reservoirs
Layers of blood vessels (inside to out) - CORRECT ANSWER✅✅✅tunica interna, tunica
media, tunica externa
tunica interna (intima) - CORRECT ANSWER✅✅✅endothelial layer that lines the lumen of
all vessels; has "intimate" contact with blood
tunica media - CORRECT ANSWER✅✅✅The middle & thickest layer of a blood vessel
wall, made of elastic tissue & smooth muscle cells that allow the vessel to expand or contract in
response to changes in blood pressure & tissue demand; innervated by sympathetic fibers
, Tunica externa (tunica adventitia) - CORRECT ANSWER✅✅✅outside wall of vessels;
collagen fibers that protect and reinforce vessels
Elastic arteries (conducting arteries) - CORRECT ANSWER✅✅✅-abundant elastin
-elastic recoil
-pressure reservoir
Muscular arteries (distributing arteries) - CORRECT ANSWER✅✅✅-deliver blood to
specific body organs
-abundant smooth muscle
-active in vasoconstriction
continuous capillaries - CORRECT ANSWER✅✅✅-most common type of capillary
-abundant in skin and muscles
fenestered capillaries - CORRECT ANSWER✅✅✅-have fenestrations (pores)
-in small intestine and kidney
sinusoidal capillaries - CORRECT ANSWER✅✅✅-leaky capillaries
-found only in the liver, bone marrow, lymphoid tissues and some endocrine glands
-allow large molecules to pass between blood and surrounding tissues
expansion of vessels - CORRECT ANSWER✅✅✅vasodilation (opening up)--high blood
flow
contraction of vessel - CORRECT ANSWER✅✅✅vasoconstriction (getting smaller in
diameter)--low blood flow
with Solution
arteries - CORRECT ANSWER✅✅✅efferent vessels, carry blood away from the heart;
pressure reservoirs; maintain flow
arteriole - CORRECT ANSWER✅✅✅Any of the small terminal twigs of an artery that ends
in capillaries; resistance vessels; direct flow
capillaries - CORRECT ANSWER✅✅✅Microscopic vessel through which exchanges take
place between the blood plasma and the interstitial fluid of the body; are permeable; extensively
branched
venule - CORRECT ANSWER✅✅✅-Any of the minute veins connecting the capillaries
with the larger systemic veins
-collection vessels
-send blood back to veins
veins - CORRECT ANSWER✅✅✅Blood vessels that carry blood back to the heart; volume
reservoirs
Layers of blood vessels (inside to out) - CORRECT ANSWER✅✅✅tunica interna, tunica
media, tunica externa
tunica interna (intima) - CORRECT ANSWER✅✅✅endothelial layer that lines the lumen of
all vessels; has "intimate" contact with blood
tunica media - CORRECT ANSWER✅✅✅The middle & thickest layer of a blood vessel
wall, made of elastic tissue & smooth muscle cells that allow the vessel to expand or contract in
response to changes in blood pressure & tissue demand; innervated by sympathetic fibers
, Tunica externa (tunica adventitia) - CORRECT ANSWER✅✅✅outside wall of vessels;
collagen fibers that protect and reinforce vessels
Elastic arteries (conducting arteries) - CORRECT ANSWER✅✅✅-abundant elastin
-elastic recoil
-pressure reservoir
Muscular arteries (distributing arteries) - CORRECT ANSWER✅✅✅-deliver blood to
specific body organs
-abundant smooth muscle
-active in vasoconstriction
continuous capillaries - CORRECT ANSWER✅✅✅-most common type of capillary
-abundant in skin and muscles
fenestered capillaries - CORRECT ANSWER✅✅✅-have fenestrations (pores)
-in small intestine and kidney
sinusoidal capillaries - CORRECT ANSWER✅✅✅-leaky capillaries
-found only in the liver, bone marrow, lymphoid tissues and some endocrine glands
-allow large molecules to pass between blood and surrounding tissues
expansion of vessels - CORRECT ANSWER✅✅✅vasodilation (opening up)--high blood
flow
contraction of vessel - CORRECT ANSWER✅✅✅vasoconstriction (getting smaller in
diameter)--low blood flow
