ANP 1105 Lecture Notes - Lecture 6: Vocal Folds, Partial Pressure, Phrenic Nerve

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

Document Summary

Internal respiration: at the level of the tissues, exchange of gases between blood in systemic capillaries and tissue cells: first 2: respiratory system, last 2: cardiovascular system. Respiratory zone: site of gas exchanged: respiratory bronchioles, alveolar ducts, and alveoli. Conducting zone: passageways: nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles, provide a passageway, cleans, humidify, and warm incoming air. Functions: airway for respiration, moistens and warms incoming air, filters and cleans inspired air, resonating chamber for speech, olfactory (smell) receptors. Differences in nose size/shape due to differences in nose size/shape due to differences in nasal cartilages. Nasal conchae: mucus lined; force air to be swirled around to increase turbulence, ensures air gets filtered. Paranasal sinuses: surround nasal cavity, frontal, sphenuoid, ethmoid, maxillary bones, lighten skull, produce mucus, warm and moisten air. Respiratory membrane: alveolar wall + capillary wall + basal laminae, air-blood barrier gas exchange by diffusion, type ii cells: scattered amount type i cells, secrete surfactant.