Explain Temperature Regulation (negative feedback loop)

Identify the four components of a negative feedback loop and explain what would happen if secretion of a body chemical controlled by a negative feedback system became too great.

The hormone insulin enhances the transport of glucose (sugar) from the blood into most body cells. Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the insulin-secreting cells. Therefore, which of the following statements is correct? A decrease in blood glucose concentration stimulates insulin secretion, which in turn further towers blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn lowers blood glucose concentration. A decrease in blood glucose concentration stimulates insulin secretion, which in turn increases blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn further increases blood glucose concentration. None of the preceding is correct.

The body’s thermostat is located in the ___________ . homeostatic receptor hypothalamus medulla vasodilation center

Match each substance with its correct description

Fever increases the body temperature and can induce chills to help cool the temperature back down. What other mechanisms are in place to regulate the body temperature? shivering sweating erection of the hairs on the arms and legs all of the above

What regulatory processes would your body use if you were trapped by a blizzard in an unheated, uninsulated cabin in the woods?

A sprinter would experience muscle fatigue sooner than a marathon runner due to ________. anaerobic metabolism in the muscles of the splinter anaerobic metabolism in the muscles of the marathon runner aerobic metabolism in die muscles of the sprinter glycolysis in the muscles of the marathon runner

Explain your skins response to a drop in body core temperature.

Nerve cells and blood vessels are surrounded and supported by _______________ con- nective tissue. adipose epithelial liquid loose