ANP 1105 Lecture Notes - Lecture 9: Bronchoconstriction, Air Barrier, Air Bc

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Joanne Savory

Document Summary

Major functions to supply body w/ o2 for cellular respiration + dispose of co2 (waste product of cellular respiration. Also functions in olfaction (smell) + speech. Movement of air into + out of lungs: external respiration. Exchange of o2 + co2 between lungs + blood: transport. O2 + co2 in blood: internal respiration. Exchange of o2 + co2 between systemic blood vessels + tissues. Divided into external nose + nasal cavity. Skin covering dorsal/lateral aspects is thin; contains many sebaceous glands. Found within + posterior to external nose. Nasal septum divides nasal cavity (midline) Formed anteriorly by septal cartilage + posteriorly by vomer bone + perpendicular plate of ethmoid bone. Posterior nasal apertures (choanae) opening where nasal cavity turns into nasopharynx. Roof formed by ethmoid + sphenoid bones. Floor formed by hard palate (bone) + soft palate (muscle) Nasal vestibule nasal cavity superior to nostrils. Lined w/ vibrissae (hairs) that filter coarse particles from inspired air.