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Chap17_2401 - 1 THE SPECIAL SENSES Chapter 17 Anatomy and...

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1 THE SPECIAL SENSES Chapter 17 Anatomy and Physiology Lecture
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2 THE SPECIAL SENSES (Special Senses - smell , taste , sight , hearing , and equilibrium - have receptor organs that are structurally more complex than receptors for general sensations.) Olfactory sensation - Smell Gustatory sensation - Taste Visual sensation - Sight Auditory and Equilibrium sensation - Hearing and balance *The sense of smell is the least specialized. *The sense of sight is the most specialized. OLFACTION Olfaction – The sense of smell, occurs in response to odors that stimulate sensory receptors located in the extreme superior region of the nasal cavity, called Olfactory recess . Olfactory Epithelium – Is the specialized nasal epithelium of the olfactory recess. Olfactory Epithelium and Bulb Ten Million olfactory neurons are present within the olfactory epithelium. Three Principal Kinds of Olfactory Epithelium Cells 1. Supporting (Sustentacular) Cells - Are columnar epithelial cells of the mucous membrane lining the nose.
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