Health Sciences 3300A/B Study Guide - Midterm Guide: Philtrum, Posterior Nasal Apertures, Bronchiole

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 3300A/B
• Professor: Dan Belliveau

Document Summary

3 primary functions: provide airway for respiratory system, moistens/warms/adds humidity to air, filters air resonation chamber for speech contains olfactory receptors root, bridge, dorsum nasi, apex, ala, nostril, philtrum begins @ nostril (external nares), ends @ choana (internal nares) divided midline by nasal septum. Bony protrusions: increases surface area (better air filtration and warming, covered in epithelium, highly vascular, air is moistened/saturated. Types of respiratory disease passage for air only posterior nasal cavity above soft palate uvula: hangs from palate, moves superior with palate to close off during swallowing contains pharyngeal tonsil starts at end of soft palate, ends at hyoid bone/epiglottis passage for both air and food continuous with oral cavity through fauces (opening from oropharynx to oral cavity) inferior of hyoid to larynx opening to respiratory and digestive system continuous with esophagus inferiorly closes off larynx during swallowing epiglottis regulates opening into larynx.