Monday, April 11, 2011

Eye

External Structure of the eye :

  • coneshaped cavity formed by the skull

  • houses and proteck the eyeball

  • padded with faty tissue

  • cushions and protects the eye from injury

Lacrimal apparatus-produces and stores tears


Lacrimal GLand-produces and transport tears


Conjuctiva-protective membrane


Internal Structures of the Eye:



  • aqueous- water humor, bathes the iris, pupil, and lens, fill the anterior and posterior chambers of the eye

  • Vitrous humor- clear, jelly-like fluid, occupies the entire eye cavity behind the lens


Eye Ball:



  1. Sciera- outermost layer, tough fibrous tissue, protective shield, white of the eye, contains the cornea

  2. Choroid- highly vascularized and pigmented

  3. Retina- contains the nerve endings

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