1. The Peripheral Nervous System
- Nerve – bundle of neuron fibers

2. Classification of Nerves
Mixed nerves – both sensory and motor fibers
Afferent (sensory) nerves – carry impulses toward the CNS
Efferent (motor) nerves – carry impulses away from the CNS
Slide 7.57
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

3. -The Cranial Nerves
-12 pairs that extend from brain and mostly serve head and neck (except vagus), numbered in order they are found Remember:
Oh, Oh, Oh, to touch
and feel very good velvet, ah

4. I. Olfactory – smell, sensory
II. Optic – sight, sensory
Oculomotor – eyes, motor
Trochlear – eyes, motor
V. Trigeminal – sensory for skin of face, motor for chewing
Abducens – eyes, motor
Facial – motor for facial expression and salivary and lacrimal glands, sensory for taste
Vestibulocochlear – sensory, balance and hearing
Glossopharyngeal – motor for swallowing, sensory for taste
Vagus – sensory from throat and torso, motor for digestion and heart
Accessory – motor to sternocleidomastoid and trapezius
Hypoglossal- motor and sensory to tongue