5.2 Body Temperature Control Flashcards

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1
Q

What is the function of the thermoregulatory centre?

A

The thermoregulatory centre monitors and controls the body temperature

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2
Q

How is the thermoregulatory centre able to perform its function?

A

The thermoregulatory centre contains receptors that are sensitive to the temperature of the blood

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3
Q

How does the skin help the thermoregulatory centre perform its function?

A

The skin contains temperature receptors that also send nervous impulses to the thermoregulatory centre

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4
Q

What happens when the body temperature is too high?

A
  • When the body temperature is too high, vasodilation occurs
  • The body also produces more sweat
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5
Q

What happens when the body temperature is too low?

A
  • When the body temperature is too low, vasocontriction occurs
  • The skeletal muscles contract
  • The body stops sweating
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6
Q

What is vasodilation

A

Vasodilation is when the blood vessels dilate, which allows more blood to flow through the capillaries, so more heat energy is transferred from the skin to the surroundings via radiation

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7
Q

How does sweating cool the body down?

A

Sweat is produced from the sweat glands, which eventually evaporates from the skin and transfers energy into the environment

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8
Q

What is vasoconstriction?

A

Vasoconstriction is when the blood vessels constrict to reduce the flow of blood and reduce the energy transferred by radiation

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9
Q

How does the skeletal muscles contracting increase body temperature?

A

The rapid skeletal muscle contraction requires a lot of energy from respiration, which is an exothermic process

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