Eye Muscles and Extraocular Anatomy

Eye Muscles and Extraocular Anatomy

Practice extraocular muscle anatomy, cranial nerves III, IV and VI, horizontal gaze, convergence, accommodation, and gaze-stabilization concepts with source-backed questions and flashcards.

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28 questions ready

Start with a quiz

Answer from memory first, then review the rationales and revisit weak areas from this course.

Activities

Quiz28 Questions
Flashcards24 Cards
Study Notes2 Notes

List of Questions28 questions
  1. Question 1
    • Six
    • Four
    • Five
    • Eight
  2. Question 2
    • Superior and inferior oblique plus medial and lateral rectus
    • Superior, inferior, medial, and lateral rectus
    • Levator palpebrae, superior oblique, and two recti
    • Ciliary, sphincter pupillae, and four recti
  3. Question 3
    • Medial rectus
    • Superior rectus
    • Lateral rectus
    • Inferior oblique
  4. Question 4
    • Oculomotor nerve (CN III)
    • Trochlear nerve (CN IV)
    • Optic nerve (CN II)
    • Abducens nerve (CN VI)
  5. Question 5
    • Superior oblique
    • Inferior oblique
    • Superior rectus
    • Lateral rectus
  6. Question 6
    • Optic nerve (CN II)
    • Oculomotor nerve (CN III)
    • Abducens nerve (CN VI)
    • Trochlear nerve (CN IV)
  7. Question 7
    • Lateral rectus
    • Superior oblique
    • Medial rectus
    • Levator palpebrae superioris
  8. Question 8
    • Optic disc
    • Fovea
    • Ciliary body
    • Trochlea
  9. Question 9
    • Superior oblique and inferior oblique
    • Superior rectus and inferior rectus
    • Medial rectus and lateral rectus
    • Superior rectus and inferior oblique
  10. Question 10
    • Lateral rectus — oculomotor nerve
    • Superior oblique — trochlear nerve
    • Medial rectus — abducens nerve
    • Inferior oblique — trochlear nerve
  11. Question 11
    • Right medial rectus and left lateral rectus
    • Both medial recti
    • Right lateral rectus and left medial rectus
    • Both superior recti
  12. Question 12
    • Both eyes turn inward toward a near target
    • One eye moves while the other remains fixed
    • The pupils constrict at the same time
    • Both eyes move in the same direction
  13. Question 13
    • Medial longitudinal fasciculus (MLF)
    • Optic chiasm
    • Corpus callosum
    • Corticospinal tract
  14. Question 14
    • Accommodation
    • Saccade
    • Convergence
    • Pupillary reflex
  15. Question 15
    • Both eyes abduct to scan the horizon
    • The lens flattens for distance vision
    • Both eyes adduct to view a near object
    • The pupils dilate in dim light
  16. Question 16
    • Abduction
    • Intorsion
    • Saccade
    • Accommodation
  17. Question 17
    • Oculomotor nerve (CN III)
    • Optic nerve (CN II)
    • Trochlear nerve (CN IV)
    • Abducens nerve (CN VI)
  18. Question 18
    • Patellar reflex
    • Vestibulo-ocular reflex
    • Pupillary light reflex only
    • Accommodation reflex only
  19. Question 19
    • Right lateral rectus and left medial rectus
    • Both lateral recti
    • Left lateral rectus and right medial rectus
    • Both superior obliques
  20. Question 20
    • Adduction
    • Convergence
    • Accommodation
    • Abduction
  21. Question 21
    • Medial rectus
    • Lateral rectus
    • Superior oblique
    • Inferior rectus
  22. Question 22
    • Inferior rectus
    • Inferior oblique
    • Medial rectus
    • Lateral rectus
  23. Question 23
    • Only horizontal movement
    • Only eyelid elevation
    • Rotational and angular eye movement
    • A change in pupil diameter
  24. Question 24
    • Lateral rectus–CN IV, superior oblique–CN VI, remaining muscles–CN II
    • Levator–CN VI, medial rectus–CN IV, obliques–CN III
    • All recti–CN VI and all obliques–CN IV
    • Lateral rectus–CN VI, superior oblique–CN IV, remaining extraocular muscles–CN III
  25. Question 25
    • Medial rectus and lateral rectus
    • Superior rectus and inferior rectus
    • Superior oblique and inferior oblique
    • Superior rectus and superior oblique
  26. Question 26
    • Loss of lens accommodation only
    • Double vision caused when the eyes are directed at different targets
    • Inability of the pupil to dilate
    • Inflammation of the conjunctiva
  27. Question 27
    • The eye turns medially toward the nose
    • The upper eyelid rises
    • The eye turns laterally away from the midline
    • The pupil constricts
  28. Question 28
    • Only the trochlear nerves control all vertical gaze
    • Vertical gaze requires no brainstem coordination
    • Only the lateral recti elevate and depress the eyes
    • Vertical gaze is coordinated mainly through the oculomotor complex and often includes small compensating components
List of Flashcards24 flashcards
  1. Card 1Extraocular Muscles, Cranial Nerves, and Gaze
  2. Card 2Extraocular Muscles, Cranial Nerves, and Gaze
  3. Card 3Extraocular Muscles, Cranial Nerves, and Gaze
  4. Card 4Extraocular Muscles, Cranial Nerves, and Gaze
  5. Card 5Extraocular Muscles, Cranial Nerves, and Gaze
  6. Card 6Extraocular Muscles, Cranial Nerves, and Gaze
  7. Card 7Extraocular Muscles, Cranial Nerves, and Gaze
  8. Card 8Extraocular Muscles, Cranial Nerves, and Gaze
  9. Card 9Extraocular Muscles, Cranial Nerves, and Gaze
  10. Card 10Extraocular Muscles, Cranial Nerves, and Gaze
  11. Card 11Extraocular Muscles, Cranial Nerves, and Gaze
  12. Card 12Extraocular Muscles, Cranial Nerves, and Gaze
  13. Card 13Extraocular Muscles, Cranial Nerves, and Gaze
  14. Card 14Extraocular Muscles, Cranial Nerves, and Gaze
  15. Card 15Extraocular Muscles, Cranial Nerves, and Gaze
  16. Card 16Extraocular Muscles, Cranial Nerves, and Gaze
  17. Card 17Extraocular Muscles, Cranial Nerves, and Gaze
  18. Card 18Extraocular Muscles, Cranial Nerves, and Gaze
  19. Card 19Extraocular Muscles, Cranial Nerves, and Gaze
  20. Card 20Extraocular Muscles, Cranial Nerves, and Gaze
  21. Card 21Extraocular Muscles, Cranial Nerves, and Gaze
  22. Card 22Extraocular Muscles, Cranial Nerves, and Gaze
  23. Card 23Extraocular Muscles, Cranial Nerves, and Gaze
  24. Card 24Extraocular Muscles, Cranial Nerves, and Gaze