ANP 1105 Chapter Notes - Chapter 22: Stratified Squamous Epithelium, Olfactory Mucosa, Adenoid

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Major function of respiratory system is to supply body with oxygen and dispose of co2. To achieve this, four processes must happen called respiration: Pulmonary ventilation (breathing): air is moved in & out of lungs (inspiration and expiration); gases are continually refreshed. External respiration: oxygen diffuses from lungs to blood; co2 diffuses from blood to lungs. Transport of respiratory gases: oxygen is transported from lungs to tissues of body; Co2 is transported from tissues of body to lungs. Internal respiration: oxygen diffuses from blood to tissue cells; co2 diffuses from tissue cells to blood. *respiratory handles first two processes, cv (cardiovascular) handles last two processes. Respiratory system consists of two zones: respiratory zone & conducting zone: respiratory zone: actual site of gas exchange. Composed of bronchioles, alveolar ducts and alveoli (all microscopic: conducting zone (respiratory passageways): includes: nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles, also cleanses, humidifies and warms incoming air.