Temperature Regulation Assignment

1.
During sweating, body temperature…
decreases
increases
remains the same
decreases and then increases
2.
Thermoregulation is the control of body…
fluids
glucose
temperature
pH
3.
Temperature receptors are found in the brain and also in the…
liver
heart
skin
mouth
4.
This happens when it is cold in order to generate heat from respiration.
Seizures
Crying
Yawning
Shivering
5.
What is the normal core body temperature for humans?
36 degrees C
37 degrees C
38 degrees C
39 degrees C
6.
Receptors inside the thermoregulatory centre detect blood…
pH
oxygen
temperature
pressure
7.
When we are too cold, these trap a layer of air for insulation.
Hairs
Mucus
Sweat glands
Capillaries
8.
Information about skin temperature is sent to the brain by…
nerve cells
heart cells
brain cells
muscle cells
9.
The part of the brain which is involved with temperature control is called the…
osmoregulatory centre
thermoreceptor centre
thermoregulatory centre
cortex
10.
Which process cools the skin during sweating?
Transpiration
Respiration
Condensation
Evaporation
Section B
  • 1.
    The heat transfer mechanism that occurs between the sun and the outer layer of the skin is called what?
    • A.

      Conduction

    • B.

      Convection

    • C.

      Radiation

    • D.

      Evaporation

  • 2.
    The heat transfer mechanism that occurs between arteries and veins in a countercurrent exchange is called what?
    • A.

      Conduction

    • B.

      Convection

    • C.

      Radiation

    • D.

      Evaporation

  • 3.
    What is the major heat source to retain body temperature for a nude 65-kg adult person in a 29oC/84.2oF environment?
    • A.

      Brain

    • B.

      Brown adipose tissue

    • C.

      Liver

    • D.

      Skeletal muscle

    • E.

      White adipose tissue

  • 4.
    Which of the following is a human thermoregulatory response controlled by cholinergic sympathetics?
    • A.

      Brown adipose tissue thermogenesis

    • B.

      Hand vasomotion

    • C.

      Shivering thermogenesis

    • D.

      Sweat secretion

    • E.

      Thermoregulatory behavior

  • 5.
    Which of the following will most faithfully reflect changes in human core temperature that could be caused by immersion in a warm body bath?
    Discuss
    • A.

      Oral temperature

    • B.

      Rectal temperature

    • C.

      Axillary temperature

    • D.

      Tympanic temperature

    • E.

      Esophageal temperature at the cardia

  • 6.
    In a man passively warmed such that his mean skin temperature reaches 40.5oC/104.9oF, which of the following circulatory responses will occur?
    Discuss
    • A.

      Increased cardiac output, decreased splanchnic blood flow

    • B.

      Increased cardiac output, increased muscle blood flow

    • C.

      Unchanged cardiac output, decreased right atrial pressure

    • D.

      Unchanged cardiac output, decreased renal blood flow

  • 7.
    Which of the following is true at the beginning of the rising phase of fever?
    • A.

      Sweat secretion is stimulated

    • B.

      Mean skin temperature is below normal

    • C.

      Muscle blood flow is decreased

    • D.

      Behavioral thermoregulatory responses are inhibited

    • E.

      Warm-sensitive neurons in the integration center are excited

  • 8.
    The principal physical mechanism that accounts for the transfer of heat within the body is what?
    • A.

      Conduction

    • B.

      Convection

    • C.

      Radiation

    • D.

      Evaporation

  • 9.
    When the environmental temperature increases moderately, what happens to blood flow to the skin?
    Discuss
    • A.

      It decreases to stop the transport of heat from the skin surface to deeper tissues

    • B.

      It decreases because the local thermoreceptors in the skin sense an increase in body temperature

    • C.

      It increases because the sweat glands release vasodilators

    • D.

      It increases as part of the body temperature regulatory mechanisms

    • E.

      It increases as the metabolic needs of the skin tissue increase

  • 10.
    If someone is experiencing heat exhaustion.  Which of the following would definitively indicate that they are now at risk for heat stroke?
    Discuss
    • A.

      Increased sympathetic dilation of their blood vessels

    • B.

      Increased hypotension

    • C.

      Their skin becomes very dry

    • D.

      They suddenly faint

    • E.

      They have an increased volume of sweat production

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