A & P II

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A & P II
2010-11-11 16:44:01

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  1. Respiration involves both
    the respiratory and the circulatory systems
  2. What are the 4 processes that supply the body O2 and dispose of CO2
    • Pulmonary ventilation
    • External ventilation
    • Transport of O2 and CO2 in the blood
    • Internal respiration
  3. Pulmonary ventilation is
    breathing, movement of air in and out of the lungs.
  4. External respiration is
    O2 and CO2 exchange between the lungs and the blood
  5. What is internal respiration?
    O2 and CO2 exchange between systemic blood vessels and tissues.
  6. What are the 9 major organs of the respiratory system?
    • Nose, nasal cavity, and paranasal sinuses
    • Pharynx
    • Larynx
    • Trachea
    • Bronchi and their branches
    • Lungs and alveoli
  7. The site of gas exchange is called the
    respiratory zone
  8. The respiratory zone includes
    Microscopic structures: respiratory bronchioles, alveolar ducts, and alveoli
  9. What are the conduits to gas exchange sites called?
    Conducting zone
  10. What are the functions of the nose?
    • Provides an airway for respiration
    • Moistens and warms the entering air
    • Filters and cleans inspired air
    • Serves as a resonating chamber for speech
    • Houses olfactory receptors
  11. The nasal cavity superior to the nostrils is called_______________ it has _________________
    • Vestibule
    • Vibrissae (nose hairs) that filter coarse particles from inspired air.
  12. What lines the superior nasal cavity and contains smell receptors?
    Olfactory mucosa
  13. Respiratory mucosa contain
    • Mucous and serous secretions
    • Cilia
  14. Cilia in the nasal cavity move
    contaminated mucus posteriorly to throat
  15. Mucous and serous secretions contain
    lysozyme and defensins