Thermoregulation

Cards (21)

  • What does homeostasis maintain in the body?
    Relatively constant internal conditions
  • What is the normal human body temperature?
    37 degrees Celsius
  • What part of the brain monitors body temperature?
    The thermo regulatory center
  • What do the receptors in the thermo regulatory center respond to?
    The temperature of the blood
  • How does the skin contribute to temperature monitoring?
    It contains temperature receptors
  • What happens when body temperature gets too high?
    The body sweats to cool down
  • What is the process called when blood vessels dilate?
    Vasodilation
  • What occurs during vasodilation?
    More blood flows through capillaries
  • How does the body cool itself down?
    Heat transfers out of the blood
  • What happens when body temperature drops too low?
    Blood vessels constrict
  • What is the term for blood vessels becoming narrower?
    Vasoconstriction
  • What happens to blood flow during vasoconstriction?
    Less blood flows through capillaries
  • What is one way the body generates heat when cold?
    Shivering occurs
  • What do skeletal muscles do during shivering?
    Contract to generate energy
  • What increases in muscle cells during shivering?
    The rate of respiration
  • What is released during increased respiration in muscle cells?
    Heat
  • What happens to sweating when body temperature falls too low?
    We stop sweating
  • How does the thermo regulatory center respond to temperature changes?
    It detects changes and initiates responses
  • What are the responses of the body to high body temperature?
    • Sweating to cool down
    • Vasodilation to increase blood flow
    • Heat transfer from blood to skin
  • What are the responses of the body to low body temperature?
    • Shivering to generate heat
    • Vasoconstriction to reduce blood flow
    • Stopping sweating
  • How does the control of body temperature exemplify homeostasis?
    • Thermo regulatory center detects changes
    • Body initiates responses to restore normal temperature
    • Maintains stable internal environment