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Which of the Following Is Most Consistent with Homeostasis

Question 30
Multiple Choice

Which of the following is most consistent with homeostasis? A) As blood pressure falls, blood flow to cardiac (heart) muscle decreases. B) As the mean blood pressure gradually increases in aging people, the blood vessel walls become thinner. C) Men working in a hot environment drink large quantities of water, and their urine volume increases. D) As body temperature decreases, blood vessels in the periphery dilate. E) Elevated blood glucose levels cause insulin secretion to increase, which in turn, causes cells to take up glucose.

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Q 31
Which of the following is consistent with homeostasis? A) As body temperature rises, sweating occurs to cool the body. B) When a person drinks large quantities of water, urine output decreases to raise blood volume. C) Elevated blood glucose levels cause insulin secretion to decline. D) Decreases in blood pressure cause a corresponding decrease in heart rate. E) As blood pressure falls, blood flow to the heart decreases.
Q 32
In a negative feedback mechanism, the response of the effector A) reverses the original stimulus. B) enhances the original stimulus. C) has no effect on the original stimulus. D) is usually damaging to the body. E) creates a cycle that leads away from homeostasis.
Q 33
A researcher discovered a sensory receptor that detects decreasing oxygen concentrations in the blood. According to the principles of negative feedback, it is likely that stimulation of this sensory receptor will produce which of the following types of responses? A) A decrease in heart rate B) An increase in the respiratory rate C) An increase in physical activity D) Unconsciousness E) Both a decrease in heart rate and an increase in the respiratory rate will occur.
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