sense of smell
14-1
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Olfactory bulb
Olfactory tract
Nasal mucosa
Cribriform plate ofethmoid boneFascicles ofolfactory nerve (I)
Figure 14.28
provides vision14-2
Figure 14.29
Eyeball
Optic nerve (II)
Optic chiasmOptic tract
Pituitary gland
Optic foramen/canal
controls muscles that turn the eyeball up, down, and medially, as well as controlling the iris, lens, and upper eyelid14-3
Oculomotor nerve (III):
Superior orbital fissure
Superior branch
Inferior branch
Ciliary ganglion
Figure 14.30
eye movement (superior oblique muscle)14-4
Trochlear nerve (IV)
Superior orbital fissure
Superior oblique muscle
most important sensory nerve of the face 14-5
provides eye movement (lateral rectus m.)
14-6
Figure 14.33
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Abducens nerve (VI)
Superior orbital fissure
Lateral rectus muscle
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 tongue14-7
nerve of hearing and equilibrium14-8
swallowing, salivation, gagging, control of BP and respiration 14-9
• major role in the control of cardiac, pulmonary, digestive, and urinary function
• swallowing, speech, regulation of viscera
14-10
swallowing, head, neck and shoulder movement14-11
Accessory nerve (XI)
Cranial root of XI
Spinal root of XI
Posterior view
Vagus nerve
Sternocleidomastoidmuscle
Trapezius muscle
Jugularforamen
Foramenmagnum
Spinal nervesC3 and C4
tongue movements for speech, food manipulation and swallowing14-12
Figure 14.39