Chapter 13 Nerves of Steel Flashcards
portion of the nervous system that consists of the brain and spinal cord
central nervous system
portion of the nervous system that consists of the cranial and spinal nerves, the autonomic system and ganglia
peripheral nervous system
abbreviation central nervous system
CNS
abbreviation central nervous system
PNS
basic unit of nervous system
neuron
____ nerves carry sensory impulses toward the CNS
sensory, afferent
____ nerves carry sensory impulses away from the CNS
motor, efferent
cell body of the neuron
soma
rootlike structures that receive impulses and conduct them toward the cell body
dendrites
combining form dendrite
denr/o
single process that extends away from cell body and conducts impulses away
axon
junction between neurons
synapse
chemical substance that is released from neurons in the synapse
neurotransmitter
protective covering over some nerve cells, including parts of the spinal cord, white matter of the brain, and most peripheral nerves
myelin
one or more bundles of impulse-carrying fibers that connect the CNS to other parts of the body
nerves
combining form nerve
neur/o, neur/i
knotlike mass of neuron cell bodies located outside the CNS
ganglion
combining form brain
encephal/o
combining form spinal cord
myel/o
combining form meninges
mening/o, meningi/o
superficial to the dura mater
epidural
deep to the dura mater and superficial to the arachnoid
subdural
clear, colorless ultrafiltrate that nourishes, cools, and cushions the CNS
cerebrospinal fluid
cerebrospinal fluid abbreviation
CSF
three layers of the meninges
dura mater, arachnoid membrane, pia mater
combining form skull
crani/o
combining form cerebrum
cerebr/o
combining form cerebellum
cerebell/o