Beginner Abducens Nerve Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which cranial nerve number corresponds to the abducens nerve?
- CN VII
- CN IV
- CN VI
- CN III
Q2. Which extraocular muscle is innervated by the abducens nerve?
- Lateral rectus
- Medial rectus
- Superior oblique
- Inferior oblique
Q3. What is the principal action of the lateral rectus muscle?
- Pupillary constriction
- Adduction of the eye
- Elevation of the adducted eye
- Abduction of the eye
Q4. Where is the abducens nucleus located?
- Medulla
- Pons
- Midbrain
- Cervical spinal cord
Q5. Which type of fibers does the abducens nerve carry?
- Taste fibers
- General sensory fibers only
- Somatic motor fibers
- Preganglionic parasympathetic fibers
Q6. At which brainstem junction does the abducens nerve emerge?
- Optic chiasm
- Midbrain-pontine junction dorsally
- Cervicomedullary junction
- Pontomedullary junction
Q7. Through which opening does CN VI enter the orbit?
- Superior orbital fissure
- Inferior orbital fissure
- Foramen rotundum
- Optic canal
Q8. Which eye movement is weakened by an abducens nerve palsy?
- Intorsion
- Adduction
- Abduction
- Accommodation
Q9. What type of diplopia is typical of an isolated unilateral CN VI palsy?
- Monocular blindness
- Pure vertical diplopia
- Horizontal diplopia
- Bitemporal hemianopia
Q10. Which statement best describes the abducens nerve?
- It is a somatic motor nerve to lateral rectus
- It supplies the superior oblique
- It is a parasympathetic nerve to the pupil
- It is a sensory nerve from the cornea