BODY TEMPERATURE
1. The part of the brain that regulates body temperature is:
a) Pituitary
b) Thalamus
c) Hypothalamus
d) Pons
e) Cerebral cortex
2. Sudden exposure to a cold environment will cause all the following except:
a) Cutaneous vasoconstriction
b) Contraction of the erector pili muscles
c) Increase arterial blood pressure
d) Cutaneous vasodilation
e) Shivering
3. Whenever the body temperature is lower than the set point the following are
present except:
a) Sweating
b) Cutaneous vasoconstriction
c) Contraction of erector pili muscles
d) Accelerated metabolism
e) Shivering
4. The metabolic rate is increased by all of the following except:
a) Catabolism of lactate
b) Saturation of myoglobin with O2
c) Saturation of hemoglobin with O2
d) Replenishing ATP stores
e) Replenishing phosphocreatine stores
5. Features of a heat stroke include all the following except:
a) Hypotension
b) Dehydration
c) Low Cardiac Output
d) Excessive sweating
e) Confusion
6. At an environmental temperature of 37o C most of the heat is lost from the
body by:
a) Radiation
b) Evaporation
c) Conduction
d) Convection
e) Conduction and Convention
7. The metabolic rate is increased by all of the following except:
a) Rise in body temperature
b) Rise in environmental temperature
c) Increased sympathetic outflow
d) Starvation
e) Hyperfunction of the thyroid gland
, 8. Responses to cold exposure include:
a) Opening of cutaneous vascular shunts
b) Increased cardiac output
c) Decreased cardiac output
d) Cutaneous vasoconstriction
e) Tachycardia
9. Responses to heat and cold are:
a) Stimulation of cutaneous thermoreceptors
b) Hypothalamic centers
c) Integration of central & cutaneous receptor inputs
d) Monitoring of the core temperature
e) Mainly regulated by the posterior hypothalamus
10. Heat exposure may lead to:
a) Heat syncope due to damage to hypothalamus
b) Heat cramps due to raised core temperature
c) Heat stroke due to excess water loss
d) Heat exhaustion due to excess water & electrolyte loss
e) Dehydration due to failure of ADH secretion
11. Sudden exposure to a cold enviornment would lead to all the following
except:
a) Cutaneous vasoconstriction
b) Decreased peripheral vascular resistance
c) Contraction of pili-erector muscle
d) Peripheral cyanosis
e) Decreased skin temperature
12. The body temperature of a patient is 38oC and observed to be rising. The
following is true regarding this patient:
a) He is unlikely to be sweating
b) His metabolic rate will be higher than normal
c) He is unlikely to be shivering
d) He is unlikely to have respiratory alkalosis
e) His temperature set point is 38oC
13. A thermoregulatory response controlled primarily by sympathetic
cholinergic nerves is:
a) Shivering
b) Cutaneous vasodilation
c) Sweating
d) Cutaneous vasoconstriction
e) Piloerection
14. Which of the following is the main customer of energy under basal
conditions?
a) Heart beat
b) Respiratory muscle activity
c) Sodium-potassium pump
d) Skeletal muscle activity
e) Pancreas
1. The part of the brain that regulates body temperature is:
a) Pituitary
b) Thalamus
c) Hypothalamus
d) Pons
e) Cerebral cortex
2. Sudden exposure to a cold environment will cause all the following except:
a) Cutaneous vasoconstriction
b) Contraction of the erector pili muscles
c) Increase arterial blood pressure
d) Cutaneous vasodilation
e) Shivering
3. Whenever the body temperature is lower than the set point the following are
present except:
a) Sweating
b) Cutaneous vasoconstriction
c) Contraction of erector pili muscles
d) Accelerated metabolism
e) Shivering
4. The metabolic rate is increased by all of the following except:
a) Catabolism of lactate
b) Saturation of myoglobin with O2
c) Saturation of hemoglobin with O2
d) Replenishing ATP stores
e) Replenishing phosphocreatine stores
5. Features of a heat stroke include all the following except:
a) Hypotension
b) Dehydration
c) Low Cardiac Output
d) Excessive sweating
e) Confusion
6. At an environmental temperature of 37o C most of the heat is lost from the
body by:
a) Radiation
b) Evaporation
c) Conduction
d) Convection
e) Conduction and Convention
7. The metabolic rate is increased by all of the following except:
a) Rise in body temperature
b) Rise in environmental temperature
c) Increased sympathetic outflow
d) Starvation
e) Hyperfunction of the thyroid gland
, 8. Responses to cold exposure include:
a) Opening of cutaneous vascular shunts
b) Increased cardiac output
c) Decreased cardiac output
d) Cutaneous vasoconstriction
e) Tachycardia
9. Responses to heat and cold are:
a) Stimulation of cutaneous thermoreceptors
b) Hypothalamic centers
c) Integration of central & cutaneous receptor inputs
d) Monitoring of the core temperature
e) Mainly regulated by the posterior hypothalamus
10. Heat exposure may lead to:
a) Heat syncope due to damage to hypothalamus
b) Heat cramps due to raised core temperature
c) Heat stroke due to excess water loss
d) Heat exhaustion due to excess water & electrolyte loss
e) Dehydration due to failure of ADH secretion
11. Sudden exposure to a cold enviornment would lead to all the following
except:
a) Cutaneous vasoconstriction
b) Decreased peripheral vascular resistance
c) Contraction of pili-erector muscle
d) Peripheral cyanosis
e) Decreased skin temperature
12. The body temperature of a patient is 38oC and observed to be rising. The
following is true regarding this patient:
a) He is unlikely to be sweating
b) His metabolic rate will be higher than normal
c) He is unlikely to be shivering
d) He is unlikely to have respiratory alkalosis
e) His temperature set point is 38oC
13. A thermoregulatory response controlled primarily by sympathetic
cholinergic nerves is:
a) Shivering
b) Cutaneous vasodilation
c) Sweating
d) Cutaneous vasoconstriction
e) Piloerection
14. Which of the following is the main customer of energy under basal
conditions?
a) Heart beat
b) Respiratory muscle activity
c) Sodium-potassium pump
d) Skeletal muscle activity
e) Pancreas
