GRST 211 Chapter Notes - Chapter 7: Paranasal Sinuses, Nasal Septum, Olfactory Bulb

• School: University of Calgary
• Department: Greek and Roman Studies
• Course: GRST 211
• Professor: Lesley Bolton

Document Summary

Olfactory apparatus consists of the olfactory bulb, olfactory tract, olfactory nerve cells, and olfactory membranes. Olfactory apparatus is the sensory unit that gets information about any odour carrying molecules that enter the nose. Osm, osphres, osphresi smell, sense of smell. The form -rrhin- only occurs in the middle of a term, never at the beginning. Nares: external openings (nostrils) of the nose, each flared part of the nostril, at the outer edge of the nose is called an ala. Septum (in anatomy): a dividing wall between two cavities or areas of soft tissue. Nasal septum (in nose): wall of cartilage that divides the nasal cavity into two sides. Nasal cavity is lined with membranes that produce mucus. Mucus: secretion that consists of the protein mucin, various cells, and inorganic salts. Prevents the underlying tissues from drying out and, with the help of the hairs in the nostrils, it traps inhaled particles and prevents that from travelling to the lands.