Directed Self-Study

Question 1

The ______ temperature unlike the core temperature rises and falls with the temperature of the surroundings.

Answer 1

Skin

Question 2

Heat production is a principal by-product of ________.

Answer 2

Metabolism

Question 3

A continuous venous plexus is supplied by inflow of blood from the skin capillaries. i n most exposed areas of the body, blood is also supplied to the plexus directly from the small arteries through highly muscular _________

Answer 3

Arteriovenous anastomoses

Question 4

_______ causes heat loss in th form of infrared rays.

Answer 4

Radiation

Question 5

_________ heat loss occurs by direct contact with an object.

Answer 5

Conductive

Question 6

___________ heat loss results from air movement.

Answer 6

Convective

*The heat from the skin is first conducted to the air and then carried away by the convection air currents

Question 7

Sweat glands are innervated by ________ nerve fibers.

Answer 7

Cholinergic

Question 8

Where are deep body temperature receptors mainly found?

Answer 8

Abdominal viscera

Spinal cord

Great veins in the upper abdomen and thorax

Question 9

Heat production by the metabolic systems is increased by promoting what?

Answer 9

Shivering

Sympathetic excitation of heat production

Thyroxine secretion