53. A frog loses its ability to undergo buccal pumping. What must happen to compensate for this loss? (A) The pumping of blood from the atria to the ventricle must increase. (B) The exchange of gases through the skin must increase. (C) The pumping of blood from the ventricle to the body must increase. (D) The diffusion of wastes through the kidneys must increase.

53. A frog loses its ability to undergo buccal pumping. What must happen to compensate for this loss?
(A) The pumping of blood from the atria to the ventricle must increase.
(B) The exchange of gases through the skin must increase.
(C) The pumping of blood from the ventricle to the body must increase.
(D) The diffusion of wastes through the kidneys must increase.

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統計： A(0), B(0), C(1), D(0), E(0) #4041874

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55. Which of the following would NOT be an example of negative feedback control in homeostasis? (A) Blood volume and pressure drop due to minor bleeding. This decreased pressure causes the kidneys to increase water reabsorption to restore blood volume and pressure. (B) Exposure to cold water causes body temperature to drop. Decreased stimulation of heat receptors causes constriction of blood vessels near the skin and better retention of heat. (C) Glucose levels rise following consumption of a big dessert, triggering release of insulin which causes glucose levels to fall. (D) During the birth process, stretch receptors in the uterus stimulate the release of oxytocin from the pituitary gland. This hormone stimulates uterine muscle contraction that increases stimulation of the stretch receptors.

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