Thermoregulation Quiz

What does the term "thermoregulation" refer to?

• Regulation of blood pressure

• Regulation of blood sugar

• Regulation of body temperature

• Regulation of heart rate

Which part of the brain is responsible for thermoregulation?

• Thalamus

• Hypothalamus

• Cerebellum

• Medulla oblongata

In endotherms, which of the following mechanisms is used to increase body temperature?

• Vasodilation

• Sweating

• Shivering

• Panting

Which of the following is a characteristic of ectotherms?

• They maintain a constant body temperature

• They rely on external sources for body heat

• They have a high metabolic rate

• They use shivering to generate heat

Which of the following is an example of positive feedback?

• Regulation of blood glucose levels

• Blood clotting

• Temperature regulation

• Osmoregulation

What is the primary method of heat transfer in endotherms during vasodilation?

• Radiation

• Conduction

• Convection

• Evaporation

Which of the following is true for negative feedback mechanisms?

• They enhance the initial stimulus

• They maintain homeostasis

• They are rare in biological systems

• They occur only in response to extreme conditions

What is the main advantage of being an endotherm?

• Less energy required for temperature regulation

• Ability to remain active in a wider range of temperatures

• Dependence on environmental heat sources

• Lower metabolic rate

Which of the following is a behavioural adaptation for thermoregulation in ectotherms?

• Sweating

• Shivering

• Basking in the sun

• Vasoconstriction

Which of the following best describes the process of vasoconstriction?

• Widening of blood vessels

• Narrowing of blood vessels

• Sweating

• Shivering