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Special Senses: Vision (accessory structures (extrinsic eye muscles…

- - - - control eyelid movement
      - extrinsic eye muscles
        
        moving eyeball in all directions
      - tarsal plate
        
        fold of connective tissue that gives eyelids shape
      - conjunctiva
        
        thin mucous membrane lines eyelids covers sclere
      - palpebral conjunctiva
        
        lines inner eyelids
      - bulbar conjunctiva
        
        eyelids to surface of eyeball, covers sclera
  - - - protect from foreign objects, perspiration, sun rays
- - - - superior/inferior lacrimal canaliculi
        
        lacrimal sac
        
        nasolacrimal duct
        
        nasal cavity
- - - - admits/refracts light
    - - provides shape/protects inner parts
  - - - posterior potion, highly vascularized
    - - colored potion of eye between cornea and lens
      - controls size of pupil (center of iris)
  - - - inner tunic
      - optic nerve visable
      - blind spot: point where optic nerve exits the optic disc
      - mcula lutea
        
        center of the retina
        
        fovea centralis
        
        center; highest fovea centralis