Scuba divers breathe a nitrogen-oxygen mixture rather than pure compressed oxygen in order to avoid what condition?
A. The bends
B. Oxygen toxicity
C. Rapture of the deep
D. Hypoxemic hypoxia
E. Caisson disease
Answer: B
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If one says that the clearance value of glucose is zero, what does this mean?
A) Normally all the glucose is reabsorbed. B) The clearance value of glucose is relatively high in a healthy adult. C) The glucose molecule is too large to be filtered out of the blood. D) Most of the glucose is filtered out of the blood and is not reabsorbed in the convoluted tubules.
The pericardium lies within the ________, a portion of the thoracic cavity that lies between the left and right pleural cavities.
Fill in the blank(s) with the appropriate word(s).
According to the International Phonetic Alphabet, which one of the following consonants is not considered an approximant?
a) [j] b) [?] c) [w] d) [n]
Eskimos wear a great deal of clothing and have limited exposure to U.V. light, but do not suffer from vitamin D deficiency. A possible explanation is,
A. their exposure to U.V. light in the summer will last for a year. B. they do not need vitamin D. C. their bodies produce vitamin D another way. D. they get enough vitamin D in their diet of fish and marine mammals. E. they do not require sunlight for vitamin D formation.