Question
43)Mixed venous blood samples can be taken from which of the
following blood vessels?
43)A)pulmonary vein
B)inferior vena cava
C)superior vena cava
D)aorta
E)pulmonary artery
Explanation:A)B)C)D)E)
44)At sea level, if oxygen is consumed by the body cells at a
rate of 300 mL per minute, then howmuch oxygen diffuses from the
alveoli into the blood in the pulmonary capillaries?
45)What is the partial pressure of oxygen in air at sea
level?
46)Which statement best describes how people die of carbon
monoxide poisoning?
47)Which statement best describes the cause of decompression
sickness?
A)Nitrogen gas bubbles form in the blood, joints, and nervous
system as pressure decreasesfrom too fast an ascent.
B)Oxygen molecules are so tightly compressed due to pressure
exerted by the water columnthat they cannot deliver oxygen to the
tissues.
C)Carbon dioxide bubbles come out of solution too quickly and
burst blood vessels, especiallyin the brain.
D)Carbon dioxide is driven into the cardiovascular system and
causes acidosis.
E)The oxygen molecule expands upon ascent and bursts,
therefore causing a lack of oxygen tothe tissues.
Explanation:A)B)C)D)E)
48)Which of the following can increase the concentration of a
particular gas in a solution?
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