Special senses 1

• Accessory structures of the eye

  • Eyelids
  • Eyelashes
  • Medial/lateral canthus
• Eyelids


  Brush particles out of the eye
• Eyelashes


  Trap particles/keep them out of the eye
• Medial/lateral canthus


  Outer and inner corners of the eye
• Anatomy of the eye

  • Tarsal glands
  • Ciliary glands
  • Conjunctiva
• Tarsal glands


  Sebaceous glands that lubricate the eye
• Ciliary glands


  Sweat glands between eyelashes, secrete lysozymes to protect/lubricate eyelashes
• Conjunctiva


  Lubricates the eyelids, lines the surface of the eye
• Conjunctivitis


  Bacterial infection that inflames the conjunctiva
• Lacrimal apparatus


  • Lacrimal gland
  • Lacrimal canals
• Lacrimal gland


  Produces tears, right below the eyebrow
• Lacrimal canals


  Drains tears from eyes, the inner corner of the eye
• Lacrimal fluid


  • Diluted salt solution, mucus, antibodies, lysosomes
  • Cleans, moistens, protects
• Eye muscles

  • Superior oblique
  • Superior rectus
  • Lateral rectus
  • Medial rectus
  • Inferior rectus
  • Inferior oblique
• Superior oblique


  Eyes look out and down
• Superior rectus


  Eyes look up
• Lateral rectus


  Eyes look outward
• Medial rectus


  Eyes look forward
• Inferior rectus


  Eyes look down
• Inferior oblique


  Eyes look out and up