I Olfactory Nerve Figure 14.28 sense of smell Olfactory bulb Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Olfactory bulb Olfactory tract Cribriform plate of ethmoid bone Fascicles of olfactory nerve (I) Nasal mucosa Figure 14.28 sense of smell

II Optic Nerve provides vision Figure 14.29 Optic foramen/ canal Eyeball Optic nerve (II) Optic chiasm Optic tract Pituitary gland Figure 14.29 provides vision

III Oculomotor Nerve Figure 14.30 Oculomotor nerve (III): Superior branch Inferior branch Ciliary ganglion Superior orbital fissure Figure 14.30 controls muscles that turn the eyeball up, down, and medially, as well as controlling the iris, lens, and upper eyelid

IV Trochlear Nerve eye movement (superior oblique muscle) Superior orbital fissure Trochlear nerve (IV) eye movement (superior oblique muscle)

V Trigeminal Nerve most important sensory nerve of the face

VI Abducens Nerve provides eye movement (lateral rectus m.) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Lateral rectus muscle Superior orbital fissure Abducens nerve (VI) Figure 14.33 provides eye movement (lateral rectus m.)

VII Facial Nerve motor – major motor nerve of facial muscles: facial expressions; salivary glands and tear, nasal and palatine glands sensory - taste on anterior 2/3’s of tongue

VIII Vestibulocochlear Nerve nerve of hearing and equilibrium

IX Glossopharyngeal Nerve swallowing, salivation, gagging, control of BP and respiration

X Vagus Nerve major role in the control of cardiac, pulmonary, digestive, and urinary function swallowing, speech, regulation of viscera

XI Accessory Nerve swallowing, head, neck and shoulder movement Cranial root of XI Jugular foramen Vagus nerve Accessory nerve (XI) Foramen magnum Spinal root of XI Sternocleidomastoid muscle Spinal nerves C3 and C4 Trapezius muscle Posterior view swallowing, head, neck and shoulder movement

XII Hypoglossal Nerve Figure 14.39 tongue movements for speech, food manipulation and swallowing