43)Mixed venous blood samples can be taken from which of the following blood vessels?
B)inferior vena cava
C)superior vena cava
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.
48)Which of the following can increase the concentration of a particular gas in a solution?
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