How does nerves control human body temperature?

Answer 1

The hypothalamus is responsible for some very important functions. One important function of the hypothalamus is the control of body temperature. The hypothalamus acts as a "thermostat" by sensing changes in body temperature and then sending signals to adjust the temperature. For example, if you are too hot, the hypothalamus detects this and then sends a signal to expand the capillaries in your skin. This causes blood to be cooled faster. The hypothalamus also controls the pituitary. The hypothalamus is composed of several different areas and is located at the base of the brain. Although it is the size of only a pea (about 1/300 of the total brain weight).

Answer 2

· Receptors in the eyes are sensitive to light

· Receptors in the ears are sensitive to sound

· Receptors in the ears are sensitive to changes in position and enable us to keep our balance

· Receptors in the tongue and in the nose are sensitive to chemicals and enable us to taste and smell

· Receptors in the skin are sensitive to pressure and temperature changes

· The information travels from these receptors, along neurones (cells in nerves) to the brain. The brain will then sort out the signals and co-ordinate our response.

Answer 3

In cold whether blood supply to skin is reduced by vasocontriction. In hot climate it increases so than perspiration should take place. This is done through sympathetic nerves. They supply the skin. (Though functionally this is parasympathetic supply.)

Answer 4

Different neurons react differently to change in temperature, but in general, firing rates and metabolic activity increase with increase in temperature (within physiological limits), and vice versa.

Answer 5

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