Flashcard Set Preview
Side ASide B
divisions of the nervous system
central nervous system (CNS)peripheral nervous system (PNS)
central nervous system
brain and spinal cord
peripheral nervous system
all nerves other than brain and spinal cord
three types of cells
sensory neuronmotor neuroninter neuron
sensory neuron is found...
in dorsal roots
motor neurons are found...
in ventral roots
inter neurons are found...
in posterior horns
motor neurons go...
out of PNS to the glands
coming from body
senses from organs
movement of body
movement of organs
spinal cord is protected by
spinal cord is made up of
white and gray matter
31 pairsbranch off from intervertebral foramen
main functions of spinal cord
main section for reflexesinvolved in sensory and motor
(membrane) CT that wraps around spinal cord and brain
three layers of meninges
most superficial layer-wraps around beginnings of spinal nerves-merges with epineurium of spinal...
outside space of duranot in brain
between dura and arachnoid
looks like a spider webmiddle layer
between arachnoid and pialarger blood vesselsruns to level S2contains cerebrospinal fluid
deepest layerhighly vascular
-H shaped-doesnt reach the end of the anterior part-has a canal in the center-gray...
cell bodies of sensorycell bodies of interneurondorsal roots
-cell bodies of motor-sends info out of spinal cord to muscles and glands-ventral roots