Temperature regulation Quiz
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5 questions, one answer each
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1. Which of these is a physiological response to a rise in core temperature?
- A. Vasodilation of skin arterioles
- B. Vasoconstriction of skin arterioles
- C. Shivering
- D. Raising of the hairs
2. Where are the thermoreceptors that detect the temperature of blood?
- A. Skin
- B. Pituitary gland
- C. Medulla oblongata
- D. Hypothalamus
3. Why can an ectotherm survive for long periods on little food?
- A. It has a high metabolic rate
- B. It does not use metabolism to generate heat, so its energy needs are low
- C. It does not use heat
- D. It has no enzymes
4. A lizard lies on a rock in the sun in the morning. This is an example of
- A. physiological control
- B. negative feedback by the hypothalamus
- C. behavioural control
- D. vasoconstriction
5. Which pair of effectors would be activated by a fall in core temperature?
- A. Sweat glands and arteriole dilation
- B. Sweat glands and erector pili relaxation
- C. Skeletal muscles (shivering) and erector pili muscles
- D. Arteriole dilation and erector pili relaxation