ANP 1105 Lecture Notes - Lecture 9: Thyroid Cartilage, Lingual Tonsils, Sphenoid Bone

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

Document Summary

Major function of respiratory system is to supply o. 4 distinct processes: and dispose of co. 1) pulmonary ventilation: movement of air in and out of lungs. 2) external respiration: exchange of gases between blood & air of alveoli. 3) transport of respiratory gases: role of blood in transport of gases between lungs & tissues of body. 4) internal respiration: at the level of the tissues, exchange of gases between blood in systemic capillaries and tissue cells. Rst 2 functions handled by respiratory system; other two by cv system. Respiratory zone: (= site of gas exchange) composed of respiratory bronchioles, alveolar ducts & alveoli (microscopic) Conducting zone: (passageways) nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles. As well as providing a passageway, conducting zone organs also cleanse, humidify & warm incoming air. Structure of external nose: differences in nose size/shape due to differences in nasal cartilages. Skin covering dorsal/lateral aspects of nose in thin; has many sebaceous glands.