| A | B |
|---|
| Olfactory | Sensory: smell (olfactory) function |
| Optic | Sensory: visual function |
| Oculomotor | Motor: Constricting the iris, controlling lens shape, raising the eyelid, and directing the eyeball |
| Trochlear | Motor: directs eyeball movement |
| Trigeminal | Sensory: conveys impulses from various areas of the face. Motor: supplies motor fibers for chewing |
| Abducens | Motor: innervates the lateral rectus muscle of eye |
| Facial | Sensory: taste, Motor: facial expression impulses to lacrimal and salivary glands |
| Vestibulocochlear | Sensory: hearing, equilibrium, Motor: adjustment of sensitivity of receptors |
| Glossopharyngeal | Sensory: taste and general sensory impulses from the pharynx and tongue, and impulses from carotid chemoreceptors/baroreceptors, Motor: Innervating the tongue and pharynx |
| Vagus | Sensory: carry impulses from thoracic and abdominal viscera, receptors, and taste buds of tongue and pharynx, Motor: regulation of heart, lungs, and abdominal viscera activities |
| Accessory | Motor: innervate the trapezius and sternocleidomastoid muscle |
| Hypoglossal | Motor: innervates extrinsic and intrinsic muscles of the tongue that contribute to swallowing and speech |
