PNS Flashcards
two types of neurone
-multipolar
-unipolar
what nerve cell bodies is CNS
nucleus
what nerve cell body is PNS
ganglion
what are axons covered in
myelin sheath
what type is this
multipolar
-motor neurons of skeletal muscle and ANS
what type of neuron is this
unipolar
-sensory
where do motor impulses go
towards body wall, body cavity or organ
what are nerves in the CNS called
tracts
-consist of a single modality
how are the spinal nerves named
from C1-C7 above vertebrae same name
everything else is named below the vertebrae
what are all anterior roots in spinal nerves
motor
what are the dorsal spinal roots
sensory
what is a dermatome
area of skin supplied with sensory innervation from a single spinal nerve
what is a myotome
the skeletal muscles supplied with motor innervation from a single spinal nerve
innervation of posterior scalp, neck and shoulder
C2-C4
innervation of upper limb
C5-T1