Aerobic exercise
A. can increase the number of mitochondria in muscle fibers.
B. increases vascularity of muscle.
C. develops fatigue-resistant fast-twitch fibers.
D. can increase the efficiency of slow-twitch fibers.
E. All of these choices are correct.
Answer: E
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Too little alveolus ventilation in comparison to its perfusion results in
a. an increase in carbon dioxide level. b. an increase in oxygen level. c. a decrease in carbon dioxide level. d. a increase in carbon dioxide level and an increase in oxygen level. e. an increase in carbon dioxide level and a decrease in oxygen level.
The parasympathetic nervous system is characterized by ____ preganglionic neurons and ____ postganglionic neurons.
Fill in the blank(s) with the appropriate word(s).
Which of the following hormones passes through the hypothalamo-hypophysial tract?
A. Adrenocorticotropic hormone B. Prolactin-inhibiting hormone C. Thyroid-stimulating hormone D. Luteinizing hormone E. Antidiuretic hormone
Primarily phagocytic cells include all of the following EXCEPT ________.
A. lymphocytes B. microglia C. macrophages D. Kupffer cells