Valves in veins
A) make the use of a skeletal muscle pump unnecessary for venous blood flow.
B) are the leading cause of high blood pressure.
C) are found only in the largest veins.
D) cause venous blood flow to go in only one direction.
E) are formed of the tunica media.
Correct Answer:
Verified
Q28: Which send blood to either esophageal arteries
Q29: Blood pressure is lowest in
A)arteries.
B)veins.
C)arterioles.
D)venules.
E)capillaries.
Q30: The end of the aorta occurs when
Q31: The force per unit area that blood
Q32: Muscles,skin,the thymus,the lungs,and the CNS contain
A)sinusoid capillaries.
B)continuous
Q34: Superior phrenic arteries supply the _ and
Q35: The most immediate artery responsible for supplying
Q36: The anterior communicating artery of the cerebral
Q37: The artery that bifurcates into the right
Q38: The most common type of capillaries are
A)fenestrated.
B)sinusoids.
C)continuous.
D)venules.
E)discontinuous.
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