DP SEHS A.1.2 Maintaining homeostasis (Part 2)

Which two processes must be balanced to maintain normal body temperature?

• Heat production and heat loss to the environment

• Heat absorption and heat reflection

• Heat storage and heat conduction

• Heat evaporation and heat insulation

What is the process called when moving air removes radiated heat from the body?

• Convection

• Conduction

• Radiation

• Evaporation

What is the primary function of feedback mechanisms in the control of homeostasis?

• To regulate body temperature and maintain internal balance

• To increase the rate of metabolism

• To promote rapid cell division

• To enhance muscle contraction

What is the main purpose of increasing blood flow to the skin during exercise?

• To increase exchange of body heat with the environment

• To decrease oxygen supply to muscles

• To prevent sweating

• To reduce skin temperature

How does blood transfer heat in the body?

• Via convection from the core to the skin

• By radiation from the skin to the environment

• Through evaporation of sweat

• By conduction through bones

If air movement is high, what effect does it have on body heat?

• Increases heat loss

• Decreases heat loss

• No effect on heat loss

• Prevents heat loss

Which of the following is NOT a method of heat transfer mentioned in the diagram?

• Photosynthesis

• Conduction

• Convection

• Evaporation

Which of the following best describes convection in the context of heat transfer?

• Movement of heat by air or water motion

• Direct transfer of heat between objects in contact

• Emission of heat as infrared radiation

• Absorption of solar energy

Which feedback mechanism is involved when the body sweats to cool down?

• Negative feedback

• Positive feedback

• Feedforward control

• Random feedback

Which process is responsible for the transfer of heat from the body core to the skin?

• Convection by blood

• Evaporation of sweat

• Radiation from the skin

• Absorption of solar energy