Chapter 16 The Special Senses. Smell Taste Effects of Different tastes on neurons.

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Presentation transcript:

Chapter 16 The Special Senses

Smell

Taste

Effects of Different tastes on neurons

Eye terminology Lacrimal apparatus Lysozymes Meibomian glands Extrinsic eye muscles

Tunics Fibrous tunic –Cornea (cover) –Sclera (white Vascular Tunic –Choroid (vascular) –Iris (colored) –Ciliary body (muscle) –Pupil (light regulation) Retina –Photoreceptor layer –Rods and cones –Fovea centralis –Optic disc

Responses of Pupil to Light

Normal Retina

Refraction of Light Rays

Rods and Cones Rods for B & W vision (120 million) Cones for color vision (6 million) Most in the Fovea

Image Formation Refraction of Light Rays Accommodation of the Lens Constriction of the Pupil Convergence

Image Problems Cataracts Age-related macular disease Presbyopia (loss of lens elasticity) Color Blindness Light and dark adaptation

Hearing and Equilibrium

Otoliths

Words to Know CataractsConjuctivitis GlaucomaKeratitis DeafnessOtalgia Meniere’s syndromeTinnitus Otitis mediaVertigo AnosmiaMyopia BlepharitisHypermetropia AstigmatismPresbyopia

More Words Hyposmia Gustation Taste aversion

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