Lecture 8 - Sensory Mechanisms

Lecture 8 - Sensory Mechanisms - body Structure of the Eye...

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Sensory Mechanisms
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Sensory Pathways Convey information about the external and internal environment to the brain
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Sensory Pathways Sensory reception Sensory transduction Sensory transmission Sensation
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Types of Sensory Receptors Mechanoreceptors Thermoreceptors Photoreceptors Chemoreceptors Pain receptors
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General Senses Temperature Body position Pain
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General Senses: Touch and pressure
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General Senses: Temperature
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General Senses: Body position
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General Senses: Pain
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Special Senses Vision Hearing Smell Taste
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Vision Depends on the Eye
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(a) Anatomy of the human eye sclera ligaments choroid retina fovea blood vessels vitreous humor blind spot optic nerve iris eyelash pupil lens cornea aqueous humor Ciliary
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Unformatted text preview: body Structure of the Eye • Three layers • Two fluid-filled chambers Vision: Reception Lens Focusing Problems • Farsightedness • Nearsightedness • Astigmatism Retina • Fovea • Optic nerve Vision: Transduction Photoreceptors • Rods • Cones Photoreceptors • Photopigments Vision: Transmission Hearing Depends on the Ear Structure of the Ear • Outer ear • Middle ear • Inner ear Hearing: Reception Cochlea Hearing: Transduction Hair Cells Hearing: Transmission Smell depends on the nose Smell: Reception Smell: Transduction Smell: Transmission Taste Depends on the Mouth Taste: Reception Taste: Transduction Taste: Transmission...
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This note was uploaded on 04/22/2009 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas at Austin.

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Lecture 8 - Sensory Mechanisms - body Structure of the Eye...

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