1. I Olfactory Nerve Figure 14.28 sense of smell Olfactory bulb
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Olfactory bulb
Olfactory tract
Cribriform plate of
ethmoid bone
Fascicles of
olfactory nerve (I)
Nasal mucosa
Figure 14.28
sense of smell

2. 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

3. 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

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

5. V Trigeminal Nerve
most important sensory nerve of the face

6. VI Abducens Nerve provides eye movement (lateral rectus m.)
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Lateral rectus muscle
Superior orbital fissure
Abducens nerve (VI)
Figure 14.33
provides eye movement (lateral rectus m.)

7. 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

8. VIII Vestibulocochlear Nerve
nerve of hearing and equilibrium

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

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

11. 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

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