Unformatted text preview: arachnoid granulations in the superior sagittal sinus. Peripheral Nervous System • The PNS consists of afferent and efferent fibers contained in spinal and cranial nerves. Cranial Nerves o There are 12 cranial nerves: 3 with only sensory function (S), 4 with only somatic motor function (M), 1 with motor and sensory function, 1 with somatic motor and parasympathetic (P) function, and 3 with all three functions. Four of the cranial nerves have parasympathetic function. o The cranial nerves are: olfactory (I; S), optic (II; S), oculomotor (III; M, P), trochlear (IV; M), trigeminal (V; S, M), abducens (VI; M), facial (VII; S, M, P), vestibulocochlear (VIII; S), glossopharyngeal (IX; S, M, P), vagus (X; S, M, P), accessory (XI; M), and hypoglossal (XII; M)....
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- Fall '10
- Anthropology, Cerebrospinal fluid