1. Home
  2. Flashcards
  3. Preview

Chapter 36: The Human Breathing System

  1. Is breathing a voluntary/involuntary action?
    Breathing is an involuntary action.
  2. What is breathing under the control of?
    Breathing is under the control of the medulla oblongata (respiratory centre) in hindbrain.
  3. What is the medulla oblongata?
    Respiratory centre in hindbrain, controls breathing.
  4. Where is the medulla oblongata situated?
    In the hindbrain
  5. Carbon dioxide dissolved in blood comes from what ?
    Carbon dioxide dissolved in blood - from respiration, is the most powerful stimulant for an increase in rate of breathing.
  6. What is the most powerful stimulant for an increase in the rate of breathing?
    Carbon dioxide dissolved in blood (from respiration) is the most powerful stimulant for an increase in the rate of breathing.
  7. Carbon dioxide is the most powerful stimulant for what?
    Carbon dioxide dissolved in blood (from respiration) is the most powerful stimulant for an increase in the rate of breathing.
  8. Can respiratory centres be controlled consciously?
    The respiratory centres can be controlled consciously for a short time (eg. speaking, singing, swallowing, swimming )
  9. What is an example of when respiratory centres are controlled consciously?
    Singing, speaking, swallowing, swimming, laughing when we control the timing of breathing.
  10. What can (other than CO2 levels) stimulate increased respiration?
    Exercise stimulates increased respiratory which produces more carbon dioxide which diffuses into the blood stream.
  11. Exercise stimulates increased respiration which produces more what?
    Exercise stimulates increased respiration which produces more carbon dioxide which diffuses into the bloodstream.
  12. How does carbon dioxide enter and mix into the bloodstream?
    Carbon dioxide diffuses into the bloodstream.
  13. Is the brain extremely sensitive to changes in the carbon dioxide concentration within the bloodstream?
    The brain is extremely sensitive to changes in the carbon dioxide concentration within the bloodstream and acts on this by increasing breathing rate and heart rate to excrete the excess carbon dioxide.
  14. How does the brain act on to changes in the carbon dioxide concentration within the bloodstream?
    The brain is extremely sensitive to changes in the carbon dioxide concentration within the bloodstream and acts on this by increasing breathing rate and heart rate to excrete the excess carbon dioxide.
  15. When would the brain start increasing breathing rate and heart rate?
    When carbon dioxide concentration increases within the bloodstream and acts on it by increasing breathing rate and heart rate to excrete the excess carbon dioxide.
  16. How is excess carbon dioxide excreted?
    The brain increases breathing rate and heart rate to excrete the excess carbon dioxide.
  17. What is the effect of exercise on breathing rate?
    • Exercise stimulates increased respiration which produces more carbon dioxide which diffuses into the bloodstream.
    • The brain is extremely sensitive to changes in the carbon dioxide concentration within the bloodstream and acts on this by increasing breathing rate and heart rate to excrete the excess carbon dioxide
Author
jacquelineglynn
ID
361863
Card Set
Chapter 36: The Human Breathing System
Description
Questions
Updated

  1. Home
  2. Flashcards
  3. Preview