ch17 - Chapter 17 THE SPECIAL SENSES Chapter Synopsis...

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Chapter 17 THE SPECIAL SENSES Chapter Synopsis Included among the special senses are smell, taste, sight, hearing, and equilibrium. .In contrast to the general senses, the special senses have highly complex receptor organs. The detailed anatomy and physiology of the special senses are discussed. The development of the eyes and ears are also discussed. Disorders include cataracts, glaucoma, macular degeneration, deafness, Menier’s disease, and otitis media. Clinical applications include hyposmia, taste aversions, age related macular damage, LASIK, detached retina, presbyopia, and otosclerosis. Chapter Outline and Objectives INTRODUCTION 1. Briefly describe the receptors for the special senses. OLFACTION: SENSE OF SMELL 2. Discuss the interconnection of the senses of smell and taste. Anatomy of Olfactory Receptors 3. Discuss the anatomic relation of cells in the olfactory mucosa and describe the cellular parts with respect to function. Physiology of Olfaction 4. Describe the sequence of events in which a molecule that comes in contact with mucus of the epithelium initiates an action potential.
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5. Explain the result of olfactory nerve adaptation on sensory nerve output and how it is useful in discriminative sensory sensitivity. Olfactory Pathway 6. Describe the neural links from the bipolar olfactory receptor to their destinations in specific functional areas of the brain. 7. Define hyposmia and state its causes. GUSTATION: SENSE OF TASTE 8. Discuss the general similarities and differences in operation of the gustatory and olfactory systems, then relate how they work together. Anatomy of Taste buds and Papillae 9. Describe the organization and functional parts of the cells within the various taste buds, indicating the differing cellular duties and etiological transformations. Physiology of Gustation 10. Describe the means by which the binding of a dissolved molecule in saliva generates a postsynaptic potential in the primary sensory neuron. 11. Describe how the gustatory system discriminates among hundreds of different tastes with only four types of taste receptors. Taste Thresholds and Adaptation
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This note was uploaded on 06/06/2011 for the course BIO 115 taught by Professor Chen during the Fall '09 term at Moraine Valley Community College.

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ch17 - Chapter 17 THE SPECIAL SENSES Chapter Synopsis...

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