Reference no: EM133223216

Which of the following statements is incorrect?

a) Warm-sensitive neurons are inhibited by pyrogens.

b) Warm-sensitive neurons inhibit cold-sensitive neurons.

c) Warm-sensitive neurons are stimulated by temperature-insensitive neurons.

d) Warm-sensitive neurons receive stimulatory feedback from peripheral (skin and spinal) temperature receptors.

Which of the following most accurately describes the definition of the thermoneutral zone?

a) A range of ambient temperatures in which body temperature remains constant.

b) A range of ambient temperatures in which metabolic rate remains constant.

c) A range of ambient temperatures in which insulation remains constant.

d) A range of body temperatures in which metabolic rate remains constant.

e) A range of body temperatures in which insulation remains constant.

Which of the following is not a feature of body temperature regulation above the thermoneutral zone?

a) Metabolic rate increases due to the costs of homeothermy.

b) Hyperthermia can occur to increase the difference between body temperature and ambient temperature.

c) Evaporative cooling can occur.

d) Insulation levels can increase.

e) All of the above are features of body temperature regulation above the thermoneutral zone.

Which of the following represents the real linear heat transfer equation below the thermoneutral zone?

a) MR = 1/I (Tambient).

b) MR = 1/I (Tbody).

c) MR = C (Tbody).

d) MR = C (Tbody-Tambient).

e) None of the above.

Which of the following is not a feature of insulatory acclimatisation?

a) Animals with greater levels of insulation can thermoregulate at lower temperatures.

b) At any given temperature, the MR required to thermoregulate is reduced.

c) There is an increase in the amount of brown adipose tissue.

d) The peak MR does not change as insulation levels change.

e) All of the above are features of insulatory acclimation.

Consider the thermoneutral zone for arctic-adapted species and tropical-adapted species. What would you expect the relationship to be between these two groupings of animals and the upper critical temperature?

a) The upper critical temperature would be lower in the tropical-adapted species.

b) The upper critical temperature would be lower in the arctic-adapted species.

c) The upper critical temperature would be similar in both of these groups.

d) The upper critical temperature is not influenced by arctic- or tropical-adaptations.

Which of the following is not a feature of temperature acclimatisation (to low temperatures) of peak metabolic rate?

a) There are increased amounts of brown fat.

b) Animals can thermoregulate at higher temperatures.

c) The metabolic rate required to thermoregulate at any given temperature doesn't change.

d) There is an increase in the maximal rate of heat production by sustained aerobic exercise.