Smell - olfactory nerves) to the olfactory bulbs, where...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Smell The sense of smell, or olfactory sense,  occurs in olfactory epithelium that  occupies a small area on the roof of the  nasal cavity. The olfactory receptor  cells are bipolar neurons whose  dendrites have terminal knobs with  hairlike cilia protruding beyond the  epithelial surface. The cilia, or olfactory  hairs, initiate an action potential when  they react with a molecule from an  inhaled vapor. However, molecules of  the vapor must first dissolve in the  mucus that covers the cilia before they  can be detected. The action potential is 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
transmitted along the axons of the  olfactory receptor cells (which form the 
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: olfactory nerves) to the olfactory bulbs, where they synapse with sensory neurons of the olfactory tract. Other cells of the olfactory epithelium include columnar supporting cells and basal cells. The basal cells continually divide to produce new olfactory receptor cells that, because of their short life, need regular replacement. The replacement of olfactory receptor cells is unusual because most other nerve cells cannot be replaced. The mucus that lines the olfactory epithelium is produced by olfactory glands that occupy the connective tissue above the olfactory epithelium....
View Full Document

This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

Page1 / 3

Smell - olfactory nerves) to the olfactory bulbs, where...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online