The statement "It controls the diameter of the pupil" is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.
C
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What happens to blood pressure during exercise?
A. It increases slightly; some cardiovascular changes promote an increase while others promote a decrease. B. It decreases greatly because vasodilation in skeletal muscles and heart tissue more than offsets factors that increase blood pressure. C. It decreases slightly; some cardiovascular changes promote a decrease while others promote an increase. D. It increases greatly because cardiac output increases and vasoconstriction in inactive organs raises blood pressure directly.
Type II alveolar cells are among the last cells to mature during fetal development. In babies born prematurely, type II alveolar cells are often not ready to perform their functions. Which of the following drugs would be most likely to help an infant with immature type II alveolar cells?
A. Pulmonary surfactant B. A muscarinic agonist C. Histamine D. A beta-adrenergic agonist E. A beta-adrenergic antagonist
Describe the four phases of the hair growth cycle
What will be an ideal response?
Which blood vessel has a thicker tunica media?
A. Capillary B. Vein C. Artery D. The tunica media is the same size in all vessels.