basic anatomy of PNS Flashcards
name the main parts of a neurone?
dendrites
soma
axon
efferent
motor
afferent
sensory
nerve cell body in PNS
ganglion
nerve cell body in CNS
nucleus
bundle of axons in CNS
tract
bundle of axons in PNS
nerve
how many pairs of spinal nerves are there?
31
where are the spinal nerves located?
intervertebral foramina
all sensory axons pass from spinal nerve into?
POSTERIOR root then rootlets then posterior horn of spinal cord
all motor axons pas from..?
ANTERIOR horn of spinal cord into rootlets then root then spinal nerve
approx where is the T4 dermatome?
male nipple
approx where is the T10 dermatome?
umbilicus
where is dermatomes C2-4
posterior scalp, neck and shoulder
where is C5-T1 dermatomes
upper limb
where are L2-Co1 dermatomes?
lower limb, gluteal and perineum regions
what is the cervical plexus?
C1-C4
what is the brachial plexus?
C5-T1
what is the lumbar plexus/
L1-L4
what is the sacral plexus?
L5_S4
where is the sympathetic outflow?
T1-L2
