Respiratory system

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Author:
chelsearose91
ID:
212154
Filename:
Respiratory system
Updated:
2013-04-08 11:26:58
Tags:
human body
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Description:
section 1
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  1. functions of respiratory system
    • distribute air
    • exchange gas- supply cells with o2, remove co2
  2. RESPIRATION
    • oxygen from environment to cells
    • by diffusion
  3. 3 PHASES of Respiration
    • Pulmonary Ventilation
    • External Respiration
    • Internal Respiration
  4. PULMONARY VENTILATION
    • exchange of gases
    • environment to lungs (alveoli)
    • by breathing
  5. EXTERNAL RESPIRATION
    • exchange of gases between lungs & blood
    • oxygen diffuses from alveoli to surrounding cappilaries
    • carbon dioxide diffuse from surrounding blood capillaries to alveoli
  6. INTERNAL RESPIRATION
    • exchange of gases between blood and cell/tissues
    • oxygen diffuses from blood capillaries to body cells
    • carbon dioxide diffuses from body cells to blood capillaries
  7. CELLULAR RESPIRATION
    • use of oxygen by cell to catabolize nutrients and release energy
    • produces carbon dioxide as a waste
  8. nostrils/nares
    opening of nasal cavities
  9. nasal septum
    nasal cavities are divided by this
  10. conchae
    • three projections
    • increase surface area for air
    • mucous lining- warms/moistens air
    • hairs/mucus traps particles
  11. sinuses
    • small cavities in skull
    • lined with mucous membrane
  12. paranasal sinuse
    • frontal- forhead
    • maxillary- behind cheek bones
    • ethmoid- between eyes
    • sphenoid- behind eyes
  13. functions of paranasal sinus
    • lighten weight of skull
    • five resonance quality of voice
  14. ears connect to pharynx by what?
    eustachian tube
  15. pharynx receives what from oral and nasal cavity?
    • air from nasal/oral
    • food/water from oral
  16. pharynx opens to what two systems?
    • respiratory- larynx
    • esophagus- GI
  17. 3 divisions of pharynx
    • nasopharynx
    • oropharynx
    • laryngopharynx

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