Special Senses (MO) - Special Senses Special Senses 1 2 3 4...

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Special Senses
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Special Senses 1. Gustation 2. Olfaction 3. Vision 4. Equilibrium 5. Hearing Receptors are specialized structures that detect specific stimuli Receptors transform stimuli into electrical energy
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1. Gustation Sense of taste Gustatory receptors are taste buds . Taste buds are located deep to raised areas on the surface of the tongue called papillae (papilla, sng.) .
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Types of Papillae
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Structure of Taste Bud
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Taste Sensations There are 5 basic taste sensations that the human tongue can detect: 1. 2. 3. 4. 5.
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Nerve impulses from taste buds in anterior 2/3 of tongue transmitted by VII (facial) Nerve impulses from taste buds in posterior 1/3 of tongue transmitted by IX (glossopharyngeal)
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2. Olfaction Sense of smell Olfactory receptors are single neurons imbedded in the lining of the superior nasal cavities. These cells possess olfactory hairs where receptors for specific airborne molecules reside.
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Olfactory Receptors Cranial nerve I
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3. Vision Sense of detecting light, color and movement The receptors are found within the retina of the eye.
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