BIOL 1412 Lecture Notes - Lecture 14: Pseudostratified Columnar Epithelium, Nasal Concha, Nasal Septum

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1412
• Professor: Ibrahima Diallo

Document Summary

Air movement in + out of lungs. Exchange of gases (o2 + co2) between lungs and blood. Nose, nasal cavity, pharynx: lower respiratory system. Epithelial tissue for most = ciliated pseudostratified columnar epithelium (with goblet cells) Cilia sweep mucus to esophagus where swallowed. Connective tissue layer of all mucosae = lamina propria: respiratory system structures, nose. Functions: airway passage (warm + moisten air, olfaction, speech (resonance chamber) Posterior part = vomer, ethmoid, maxillae, palatine bones. Lined by skin with coarse hairs: respiratory area. Mucosa = ciliated pseudostratified epithelium + ct. Inferior to each concha = a nasal meatus (shallow groove) Conchae and meatuses cause air turbulence to knock out dust. Lacrimal duct opens into cavity (just below inferior nasal concha) Tears into nasal cavity: olfactory area. Neurons = olfactory receptors: paranasal sinuses. Inflammation of mucous membrane: pharynx (throat): From epiglottis to opening of larynx: larynx (voice box): Don"t need to know the other 2.