The diameter of many blood vessels is controlled exclusively by the ________ nervous system, and decreases in the activity of this system result in ________.
A. parasympathetic; vasodilation
B. sympathetic; vasodilation.
C. somatic; vasoconstriction.
D. sympathetic; vasoconstriction.
E. parasympathetic; vasoconstriction
Answer: B
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The ____________________ are protective and nourishing membranes that lie between the central nervous system and its bony covering
Fill in the blank(s) with correct word
When intra-alveolar pressure becomes greater than atmospheric pressure,
a. air will flow out of the lungs. b. air will flow into the lungs. c. there will be no air flow. d. both (a) and (b) above. e. none of these answers.
Which is not true about spermatogenesis?
A. Mature spermatozoa are haploid. B. The process takes place in the walls of the seminiferous tubules. C. The process includes two meiotic divisions. D. Spermatogenesis begins at birth and continues throughout a man's life. E. The final stage of the process is called spermiogenesis.
The glenoid cavity of the ________ articulates with the head of the ________.
A. scapula; humerus B. humerus; scapula C. scapula; sternum D. sternum; humerus E. radius; humerus