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Question 01

Regarding basal metabolic rate:

a) Basal metabolic rate is defined as the lowest metabolic rate that occurs in any 24 hour period.

b) The basal metabolic rate is increased in people suffering from hypothyroidism.

c) Basal metabolic rate increases with age.

d) Adult males have a higher basal metabolic rate than adult females.

Question 02

The oxygen consumption of a normal adult:

a) Is around 500 ml/min at rest.

b) Is a good measure of the metabolic rate.

c) Can be used to determine the type of food being metabolized by any individual.

d) May reach over 20 liters/min in maximal exercise.

Question 03

Concerning the metabolic rate:

a) Metabolic rate increases slightly when walking slowly compared to sitting.

b) The metabolic rate is depressed after a meal.

c) Metabolic rate increases during starvation, as protein is broken down to make glucose.

d) Metabolic rate is increased following a protein rich meal.

Question 04

Concerning metabolism during exercise:

a) Fats are the main source of energy during exercise.

b) The contribution made by anaerobic exercise increases during prolonged exercise.

c) Carbohydrates provide the main source of energy in exercise.

d) Plasma glucose falls significantly during a period of exercise at half the maximal rate lasting for 2 hours.

Question 05

Regarding circulatory adjustments during exercise:

a) The cardiac output increases more than tenfold in severe exercise.

b) The increase in cardiac output during exercise is mainly due to an increase in stroke volume.

c) The increase in stroke volume seen in exercise occurs despite a smaller end-diastolic volume.

d) In severe exercise the mean arterial pressure is unchanged because diastolic pressure falls.

Question 06

Regarding the respiratory adjustments seen in exercise:

a) The activity of the joint receptors is an important factor driving the increase in ventilation.

b) During exercise the arterial PCO₂ rises significantly.

c) As the intensity of exercise increases the arterio-venous difference in oxygen content remains roughly constant.

d) During exercise the arterial PO₂ falls.

Question 07

Regarding the regulation of body temperature:

a) In a temperate climate under normal conditions, the greatest loss of body heat occurs through radiation.

b) During water immersion, heat is mainly lost via radiation.

c) The thalamus is the centre for integrating thermal information.

d) As the skin possesses thermoreceptors, its temperature is regulated more closely than the core temperature.

Question 08

Regarding sweating and heat loss:

a) Heat loss through sweating is controlled by the parasympathetic nervous system.

b) The efficacy of sweating as a mechanism of heat loss is increased in tropical rain forest.

c) Profuse sweating can lead to heat exhaustion.

d) Sweat is secreted by the apocrine glands.

Oxford University Press, Online Resource Centre, Chapters 24-26.

Chapters 24-26

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