Beginner Hypoglossal Nerve Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which cranial nerve number corresponds to the hypoglossal nerve?
- CN XII
- CN XI
- CN X
- CN IX
Q2. What is the principal functional component of the hypoglossal nerve?
- Somatic motor
- Special sensory for taste
- General sensory
- Preganglionic parasympathetic
Q3. Where is the hypoglossal nucleus located?
- Pons
- Upper cervical spinal cord
- Medulla
- Midbrain
Q4. From which surface of the medulla do hypoglossal rootlets emerge?
- At the pontomedullary junction lateral to CN VIII
- From the dorsal midbrain
- Between the pyramid and olive
- Between the olive and inferior cerebellar peduncle
Q5. Through which opening does CN XII leave the skull?
- Stylomastoid foramen
- Foramen ovale
- Hypoglossal canal
- Jugular foramen
Q6. Which tongue muscle is NOT supplied by the hypoglossal nerve?
- Hyoglossus
- Styloglossus
- Palatoglossus
- Genioglossus
Q7. Which major tongue protrusor is supplied by CN XII?
- Superior pharyngeal constrictor
- Genioglossus
- Palatoglossus
- Styloglossus
Q8. What happens to the tongue on protrusion after a unilateral lower motor neuron lesion of CN XII?
- It retracts without deviation
- It deviates toward the side of the lesion
- It deviates away from the lesion
- It remains perfectly midline
Q9. Which finding may develop in the tongue after a lower motor neuron hypoglossal lesion?
- Atrophy and fasciculations
- Hyperacusis
- Loss of pupillary reflexes
- Facial anesthesia
Q10. Which statement best describes CN XII?
- It supplies the muscles of mastication
- It is a motor nerve supplying most tongue muscles
- It carries taste from the tongue
- It provides the main sensory innervation of the tongue