PHM 450 Exam 3 Correct 100%

What does the respiratory system include? - ANSWER nose, windpipe (trachea, and lungs) Upper Respiratory Tract contains what? - ANSWER nasal cavity to larynx (voice box)/epithelial types (4) function of upper respiratory (3 functions) - ANSWER 1)olfaction (smell) 2)air conditioning (filters, warms, moistens air) 3)Defense-trapping/elimination of volatile substances Epithelium types (4) and what respiratory tract are they under - ANSWER In the upper respiratory tract 1)squamous nasal-lines the vestibules of nostrils 2)psuedostratified columnar-most abundant cell type in upper airway, lines the anterior nasal passages as well as upper and lower resp. tract 3) olfactory-basal cells (stem cells that differentiate into olfactory cells **Bowman's gands_produce mucus 4)Transitional-separates squamous, respiratory and olfactory into regions -comprised of non-ciliated cells and few mucous cells