Ththinnest vessels in thhuman circulatory systearthe
A) veins.
B) capillaries.
C) arteries.
D) arterioles.
E) venules.
Correct Answer:
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Q50: Oxygen will diffusacross gill membranes into thbloobecause
A)oxygen
Q51: Insects us_ as a respiratory system.
A)integument exchange
B)lungs
C)tracheal
Q52: As blooflows through thcapillary bed,
A)blood pressure increases.
B)blood
Q53: A largrespiratory surface
A)results in a slow rate
Q54: After a largmeal
A)arteries supplying blood to the
Q57: Humans _ air into their lungs, anfrogs
Q58: In order to adapt to thhigh oxygen
Q59: _ is thlowest bloopressurof thcardiac cyclanoccurs when
Q60: Varicosveins
A)may result when vein valves fail.
B)may result
Q110: Lungs are
A) internal organs with respiratory surfaces
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