Carvell, PhD, PTUniversity
PERIPHERAL NERVES I
The distribution of nerve
fibers differs for a deep muscle nerve vs. a
superficial cutaneous nerve. C fibers
in both represent afferent C and efferent (sympathetic)
12.9 p 404
peripheral nerves contain both sensory andmotor axons. The distribution of
sensory and motor axon type differs for terminal nerves innervating
skeletal muscles (muscle nerve) vs. terminal nerves innervating
skin, and joints (cutaneous nerves).
C fibers do notinnervate
the specialized skin or muscle mechano- receptors
nor the motor units, C fibers represent the
largest proportion of axons in a nerve (fig
Velocities are for cats, humans conduct slower.