KINESIOL 1YY3 Lecture Notes - Lecture 9: Olfaction, Stratified Squamous Epithelium, Respiratory Tract

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 1YY3
• Professor: Krista Howarth

Document Summary

Conducting zone: air transport from outside into respiratory zone. Respiratory zone: gas exchange (gas exchange here and never in conducting zones) Moving internally: vomer and perpendicular plate make up the septum, thru nares (naris singular) aka nostrils. Has different epi tissue than rest of nose (stratified squamous epi tissue) bc it is close to external environment where it comes in contact with crap. Hairs there too: cribriform plate with foramina > olfactory region, superior, middle, and inferior conchae. Take up most of the space; start at medial portion and go out laterally. Create turbulent flow > circulates to reach the olfactory region: pseudostratified columnar ciliated epithelium, important bc goblet cells create mucous and the cilia move the. Also so it contacts lining of the nasal cavity mucous toward throat to get rid of in digestive system. The conchae also create meatus"s (tunnels, spaces) between the ridges, where air moves thru.