Nerve Types and Structures Innervated

List all of the CN’s that are afferent only

CN I
CN II

List all of the CN’s that are efferent only

CN III
CN IV
CN VI
CN XI
CN XII

List the Cn’s that are both afferent and efferent

CN V
CN VII

CN IX

CN X

Afferent, nasal mucosa

Olfactory CN I

Afferent, retina of the eye

Optic CN II

Efferent, eye muscles including some smooth muscles (parasympathetic)

Oculomotor CN III

Efferent, one eye muscle

Trochlear CN IV

Efferent, muscles of masticsation and other cranial muscles

Afferent, face and head skin, teeth, oral cavity, and most general sensationfor tongue

Trigeminal CN V

Efferent, one eye muscle

Abducens CN VI

Efferent, muscles of facial expression, other cranial muscles, lacrimal gland and submandibular, sublingual, and minor salivary glands (parasympathetic)
Afferent, skin around ear and taste sensation for tongue

Facial CN VII

Afferent, inner ear

Vestibulocochlear CN VIII

Efferent, stylopharngeus muscle and parotid salivary gland (parasympathetic), and respiratory muscosa of pharynx
Afferent, skin around ear and taste and general sensation for tongue

Glossopharyngeal CN IX

Efferent, most muscles of the soft palate, pharynx, larynx, thoracic and abdominal organs (parasympathetic)
Afferent, skin around ear and tase and sensation for epiglottis

Vagus X

Efferent, muscles of head and neck

Accessory CN XI

Efferent, tongue muscles

Hypoglossal CN XII