AZ Cranial Eye Muscles

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flashsmilenet
ID:
288318
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AZ Cranial Eye Muscles
Updated:
2014-11-13 22:00:05
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AZ Cranial Eye Muscles
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AZ Cranial Eye Muscles
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  1. 1
    • Superior oblique
    • Origin: Common tendinous ring
    • Insertion: Outer, posterior quadrant of globe
    • Action(s): Depresses, abducts, and medially rotates globe
    • Extraocular Muscle

  2. 2
    • Levator palpebrae superioris
    • Origin: Sphenoid, lesser wing
    • Insertion: Middle layer of eyelid (tarsus)
    • Action(s): Elevates upper eyelid
    • Extraocular Muscle

  3. 3
    • Superior rectus
    • Origin: Common tendinous ring
    • Insertion: Anterior, superior globe
    • Action(s): Elevates, adducts, and medially rotates globe
    • Extraocular Muscle

  4. 4
    • Medial rectus
    • Origin: Common tendinous ring
    • Insertion: Anterior, medial globe
    • Action(s): Adducts globe
    • Extraocular Muscle

  5. 6
    • Lateral rectus
    • Origin: Common tendinous ring
    • Insertion: Anterior, lateral globe
    • Action(s): Abducts globe
    • Extraocular Muscle

  6. 5
    • Inferior rectus
    • Origin: Common tendinous ring
    • Insertion: Anterior, inferior globe
    • Action(s): Depresses, adducts, and laterally rotates globe
    • Extraocular Muscle

  7. 7
    • Inferior oblique
    • Origin: Medial orbital floor
    • Insertion: Outer, posterior quadrant of globe
    • Action(s): Elevates, abducts, and laterally rotates globe
    • Extraocular Muscle

  8. 4
    Optic Nerve

  9. 5
    Optic Canal

  10. 6
    Ophthalmic Artery

  11. 12
    Inferior Ophthalmic Vein

  12. 13
    Superior Ophthalmic Vein

  13. 1
    lamina papyracea

  14. 2
    frontal bone

  15. 3
    frontozygomatic suture

  16. 4
    zygomatic bone

  17. 5
    maxillary bone

  18. 6
    infraorbital foramen

  19. a
    Lateral rectus muscle

  20. b
    Superior rectus muscle

  21. c
    Medial rectus muscle

  22. d
    Superior oblique muscle

  23. e
    Levator palpebrae superioris complex

  24. f
    Lacrimal gland

  25. g
    Inferior oblique muscle

  26. a
    Medial rectus muscle

  27. b
    Superior oblique muscle

  28. c
    Ophthalmic artery

  29. d
    Superior rectus muscle/levator palpebrae superioris complex

  30. e
    Dural sheath

  31. f
    Superior ophthalmic vein

  32. g
    Subarachnoid space

  33. h
    Optic nerve

  34. i
    Inferior rectus muscle

  35. j
    Lateral rectus muscle

  36. a
    Superior ophthalmic vein

  37. b
    Lateral rectus muscle

  38. c
    Inferior rectus muscle

  39. d
    Medial rectus muscle

  40. e
    Superior oblique muscle

  41. f
    Superior rectus muscle/levator palpebrae superioris complex
  42. There are two groups of eye muscles:
    • Intraocular Muscles – control pupil size and the shape of the lens
    • Extraocular Muscles – move the eyelid and globe, can be demonstrated on sectional images.
  43. There are ___ extraocular muscles
    7
  44. The six muscles that move the globe are divided into two groups:
    • Rectus Group (four muscles)
    • ObliqueGroup (two muscles).
  45. Tree fluid-filled chambers:
    • Anterior – located between the cornea and iris
    • Posterior – extends from the posterior aspect of the iris to the vitreous cavity
    • Vitreous – comprises the remaining posterior portion of the globe; filled with aqueous humor (special fluid of the globe)
  46. Superior oblique
    • Extraocular Muscle
    • Origin: Common tendinous ring
    • Insertion: Outer, posterior quadrant of globe
    • Action(s): Depresses, abducts, and medially rotates globe
  47. Levator palpebrae superioris
    • Extraocular Muscle
    • Origin: Sphenoid, lesser wing
    • Insertion: Middle layer of eyelid (tarsus)
    • Action(s): Elevates upper eyelid
  48. Superior rectus
    • Extraocular Muscle
    • Origin: Common tendinous ring
    • Insertion: Anterior, superior globe
    • Action(s): Elevates, adducts, and medially rotates globe
  49. Medial rectus
    • Extraocular Muscle
    • Origin: Common tendinous ring
    • Insertion: Anterior, medial globe
    • Action(s): Adducts globe
  50. Lateral rectus
    • Extraocular Muscle
    • Origin: Common tendinous ring
    • Insertion: Anterior, lateral globe
    • Action(s): Abducts globe
  51. Inferior rectus
    • Extraocular Muscle
    • Origin: Common tendinous ring
    • Insertion: Anterior, inferior globe
    • Action(s): Depresses, adducts, and laterally rotates globe
  52. `Inferior oblique
    • Extraocular Muscle
    • Origin: Medial orbital floor
    • Insertion: Outer, posterior quadrant of globe
    • Action(s): Elevates, abducts, and laterally rotates globe

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