Exercise 24 - Special Senses Vision

Exercise 24 - Special Senses Vision - Richland College Biol...

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EXERCISE 24 – VISION OBJECTIVES 1. To describe the structure and function of the accessory visual structures. 2. To identify the structural components of the eye. 3. To describe the layers of the retina and the cells comprising each layer.. 4. To explain the difference between rods and cones in visual perception and localization. 5. To discuss the importance of the pupillary and convergence reflexes. 6. To define the following terms: refraction, accommodation, convergence, emmetropia, myopia, hyperopia, astigmatism, conjunctivitis, cataract, glaucoma NOTES: STRUCTURES OF THE EYE I. Accessory structures of the eye 6 extrinsic eye muscles innervated by CN III, IV and VI: superior rectus inferior rectus medial rectus lateral rectus inferior oblique superior oblique 3 intrinsic eye muscles: pupillary sphincter (iris) pupillary dilator (iris) ciliary muscle Lacrimal apparatus: lacrimal glands, sac and duct II. Anatomy of the eyeball 3 tunics: sclera choroid retina anterior vs. posterior cavity aqueous humor vs. vitreous humor
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