Beginner Accessory Nerve Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which cranial nerve number corresponds to the accessory nerve?
- CN X
- CN XI
- CN IX
- CN XII
Q2. Which two major muscles receive motor innervation from the spinal accessory nerve?
- Mylohyoid and geniohyoid
- Masseter and temporalis
- Stylohyoid and digastric
- Sternocleidomastoid and trapezius
Q3. Where is the spinal accessory nucleus located?
- Upper cervical spinal cord
- Midbrain
- Pons
- Thoracic spinal cord
Q4. Through which opening do the spinal rootlets of the accessory nerve enter the cranial cavity?
- Foramen ovale
- Foramen magnum
- Carotid canal
- Internal acoustic meatus
Q5. Through which foramen does the accessory nerve leave the cranial cavity?
- Jugular foramen
- Stylomastoid foramen
- Foramen rotundum
- Hypoglossal canal
Q6. What is a major action of sternocleidomastoid when acting unilaterally?
- Rotation of the face toward the opposite side
- Elevation of the mandible
- Protrusion of the tongue
- Rotation of the face toward the same side only
Q7. What is a major action of the upper fibers of trapezius?
- Depression of the mandible
- Protraction of the tongue
- Elevation and upward rotation of the scapula
- Adduction of the eye
Q8. Which movement is commonly weakened by an accessory nerve lesion affecting trapezius?
- Eyelid closure
- Shoulder shrug
- Tongue protrusion
- Jaw closure
Q9. Which movement is tested to assess sternocleidomastoid function?
- Tongue elevation
- Head rotation against resistance
- Pupillary constriction
- Jaw opening only
Q10. Which statement best describes the spinal accessory nerve?
- It is a sensory nerve from the face
- It supplies the muscles of mastication
- It carries taste from the posterior tongue
- It is a motor nerve to sternocleidomastoid and trapezius