Thermoregulation and Homeostasis Quiz

What is thermoregulation?

• The regulation of blood pressure

• The process of digestion

• The control of our internal body temperature

• The process of maintaining a stable internal environment

Why is it important to regulate our body temperature?

• To enhance muscle growth

• To maintain blood pressure

• To ensure proper enzyme function

• To improve digestion

Which part of the brain controls thermoregulation?

• Cerebellum

• Medulla oblongata

• Cerebrum

• Hypothalamus

What is the ideal body temperature for enzyme function?

• 40 degrees Celsius

• 39 degrees Celsius

• 37 degrees Celsius

• 35 degrees Celsius

What happens to enzymes if the body temperature rises above 37 degrees Celsius?

• They multiply

• They denature and can't work

• They change color

• They become more active

What is vasoconstriction?

• Relaxation of muscles

• Contraction of blood vessels near the skin surface

• Production of sweat

• Expansion of blood vessels

How does shivering help in warming the body?

• By generating heat as a byproduct of muscle contraction

• By releasing heat through respiration

• By conserving energy

• By directly producing heat

What role do erector muscles play in thermoregulation?

• They regulate blood flow

• They produce sweat

• They make hairs stand on end to trap insulating air

• They help in vasodilation

What is vasodilation?

• Contraction of blood vessels

• Expansion of blood vessels to release heat

• Production of sweat

• Relaxation of muscles

How does sweating help cool the body?

• By contracting muscles

• By increasing blood flow

• By evaporating and taking heat away

• By trapping heat