Which of the following is most consistent with homeostasis? select one: 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 (insulin causes cells to take up glucose) to increase.

Elevated blood glucose levels causing insulin secretion (insulin causes cells

to take up glucose) to increase is most consistent with homeostasis.

Homeostasis is defined as the regulation of the body environment in order

to maintain stable conditions for its optimal functioning. Water and sugar

levels are examples of conditions which are regulated.

Elevated blood glucose levels causes an increase in insulin secretion in

which the excess glucose is converted to glycogen and stored in the liver.

This helps to maintain a stable  glucose level in the body.

In hot environment, the volume of urine actually decreases so to ensure the

water level is stable to prevent dehydration.

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Both C and E are reasonable answers.

Explanation:

Homeostasis describes the body's ability to maintain a stable equilibirum. In other words, if the body experiences a stress, it will generate a response that works to counteract that stress and restore itself to how it was prior to the stress.

A. This describes a cause and effect (BP down --> venous return down). It does not describe an active physiological response to counteract the BP drop such as an increase in heart rate. Not homeostasis.

B. Again, a cause and effect is described. Blood vessel walls becoming thinner is not a response to counteract increased BP. Not homeostasis.

C. Here a response to a stress is described. Men are drinking more water. The body responds by getting rid of that water, restoring the body to its former state. This describes homeostasis.

D. This sounds like homeostasis, but it's actually the opposite of what happens. Dilation of peripheral blood vessels is a way for the body to get rid of heat. This is the opposite of what you would want if the body got colder - it would make the stress worse, which is the opposite of homeostasis. In actuality the response to cold temperature is constriction of blood vessels to preserve heat.

E. This deescribes homeostasis. The stress is increased glucose. The body's response to manage it is to release insulin, which helps remove the glucose from circulation.

answer; the above statement is (true);

d) center of the mid-ocean ridge

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