Cranial nerve | Sensory innervation | Motor innervation |
CN V trigeminal mandibular branch (V3) | - Sensation to the lining of the buccal cavity, tongue, teeth
| - Muscles of mastication
- Mylohyoid and anterior belly of the digastric muscles for hyolaryngeal elevation, tensor veli palatini
|
CN VII facial | - Taste to the anterior two-thirds of the oral tongue
- Sensation to the facial muscles
| - Muscles of facial expression.
- Lip closure, protrusion, and retraction
|
CN IX glossopharyngeal | - Receives input from tonsils, pharynx, posterior tongue
- Supplies taste to the posterior one-third of the tongue
| - Stylopharyngeus elevates pharynx and larynx
|
CN X vagus | - Sensation to the pharynx, larynx, trachea
| - Muscles of the velopharyngeal mechanism
- Pharyngeal constrictors including cricopharyngeus
- Intrinsic muscles of the larynx including vocal folds
|
CN XI accessory | | - Sternocleidomastoid and trapezius muscles
|
CN XII hypoglossal | | - Extrinsic tongue muscles
- Intrinsic muscles of the tongue for speech articulation and bolus manipulation
|