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The Special Senses. Olfactory Sense. Olfactory Senses. The Nose …. Review: Cranial Nerve . Olfactory Bulb Olfactory Tracts. Olfactory Sense. Olfactory epithelium: Mixture of receptors Support cells Glands Basel stem cells. Olfactory Receptor Cell. Olfactory Sense. Video Clip.

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Presentation Transcript
The special senses

The Special Senses

Olfactory Sense


Olfactory senses
Olfactory Senses

The Nose …


Review cranial nerve
Review: Cranial Nerve

  • Olfactory Bulb

  • Olfactory Tracts


Olfactory sense
Olfactory Sense

  • Olfactory epithelium:

    • Mixture of receptors

    • Support cells

    • Glands

    • Basel stem cells

Olfactory Receptor Cell


Olfactory sense1
Olfactory Sense

Video Clip

OlfactoryReceptorCells

  • Contain an exposed knob with up to 20 cilia covered in mucus…

Pick up dissolved odorant

Axons penetrate Cribriform plate to synapse into Olfactory Bulb

Olfactory bulb synapse into Olfactory Tract

Olfactory Tract synapse into Olfactory Cerebral Cortex

Olfactory Cortex synapse into Hypothalamus

Able to distinguish between 2000-4000 odorants!

Specialize to respond to certain chemicals..!!



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