sport science- respiratory system

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  • sport science- respiratory system
    • breath goes in through the mouth. this then goes through the pharynx then the larynx through the trachea to the bronchi to the bronchioles to the alveoli
    • inspiration- rest
      • contraction of external intercostal muscles and diaphragm
      • inspiration- exercise
        • contraction of external intercostal muscles, diaphragm, sternocleidomastoid, scaleness and pectorals minor
    • expiration- rest
      • relaxation of intercostal muscles and diaphragm
      • expiration- exercise
        • contraction of internal intercostal muscles and abdominals
    • things that aid diffusion:
      • blood cells come in slowly and single file at low pressure
      • increases surface area, compressed against wall of capillaries
      • small diffusion path way, more efficient
      • millions of alveoli in the body
      • high capillary density
      • moist, film of moisture, transports easier when liquid not gas

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