In a free body diagram of the human body, which direction would the vector representing weight of the body point?
A. up
B. down
C. depends on body orientation
D. not possible to determine
B. down
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Anabolic reactions release energy, while catabolic reactions use energy.
Answer the following statement true (T) or false (F)
What stimulates the release of parathyroid hormone (PTH)?
A) low blood calcium ion levels B) high levels of vitamin C C) high blood calcium ion levels D) high levels of vitamin D
A plane that divides the body into anterior and posterior parts is the
A) sagittal plane B) proximal plane C) frontal plane D) midsagittal plane
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.