Human Body Temperature Quiz

What is the approximate normal core body temperature in humans?

• 30°C

• 37°C

• 42°C

Which part of the brain is responsible for controlling body temperature?

• Cerebellum

• Hypothalamus

• Medulla oblongata

What happens to blood vessels in the skin when the body needs to cool down?

• They constrict (vasoconstriction).

• They dilate (vasodilation).

• They remain unchanged.

What is the process of heat transfer from sweat evaporating off the skin called?

• Radiation

• Conduction

• Evaporation

What is the primary reason why body temperature should not rise above 40°C?

• Muscles would cramp.

• Enzymes would denature.

• Blood pressure would drop too low.

Which of the following occurs to generate heat when the body is too cold?

• Sweating

• Shivering

• Vasodilation

What happens to the hairs on the skin when the body is cold?

• They lie flat against the skin.

• They stand on end.

• They fall out.

What is the term for the control of body temperature within narrow limits?

• Homeostasis

• Metabolism

• Thermoregulation

Where are the temperature receptors located that send information to the hypothalamus?

• Only in the skin.

• Only in the core body.

• In both the skin and the core body.

Which factor helps to reduce heat loss from the body in cold conditions by trapping a layer of air?

• Increased blood flow to the skin.

• Hairs standing on end.

• Evaporation of sweat.