In people who stand for long periods, blood tends to pool in the lower limbs and this may result in varicose veins.Varicose veins are caused by
A) an aneurysm or weak point in an artery.
B) an aneurysm or weak point in a vein.
C) failure of the venous valves.
D) failure of the lymphatic valves.
E) a ruptured aneurysm in a vein.
Correct Answer:
Verified
Q27: These are all possible circulatory routes from
Q28: A mean arterial pressure (MAP) below 60
Q29: by the capillaries at their venous end.
A)Waste
Q30: Hypertension is commonly considered to be a
Q31: does not contribute to venous return.
A)The difference
Q32: These are all mechanisms of movement through
Q33: What is the mean arterial pressure for
Q33: All these can lead to edema except
A)obstruction
Q34: This figure shows changes in blood pressure
Q35: would not increase capillary filtration.
A)Blockage of lymphatic
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