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
largest portion of the brain, responsible for receiving and processing stimuli
cerebrum
second largest portion of the brain, coordinates muscle activity for smooth muscle
cerebellum
stalklike portion of the brain that connects the cerebral hemispheres with the spinal cord
brainstem
caudal continuation of the medulla oblongata
spinal cord
combining form spinal cord
myel/o
discs are locate between the vertebrae and are referred to as
intervertebral discs
nerves that arise from the spinal cord
spinal nerves
network of intersecting nerves
plexus
part of the peripheral nervous system that innervates smooth muscle, cardiac muscle and glands
autonomic nervous system
autonomic nervous system abbreviation
ANS
portion of the autonomic nervous system responsible for homeostasis
parasympathetic nervous system
removal of cerebrospinal fluid
cerebrospinal tap (CSF tap)
abbreviation bright, alert, responsive
BAR
deep state of unconsciousness
coma
mentally confused
disorientation
drowsiness, listlessness
lethargy
depressed
obtunded
unresponsiveness to stimuli
stupor
abbreviation pupillary light reflex
PLR
memory loss
amnesia
without coordination, stumbling
ataxia
muscle rigidity
catalepsy
smaller than normal cerebellum
cerebellar hypoplasia
shaking of the brain caused by injury
concussion
neurologic deficit in which the animal appears not to know where its limbs are located
conscious proprioceptive deficit
inflammation of the brain
encephalitis
disease of the brain
encephalopathy
recurrent seizures
epilepsy
mass or collection of blood
hematoma
paralysis of one side of the body
hemiplegia
excessive sensitivity
hyperesthesia
abnormal softening of the white matter of the brain
leukoencephalomalacia
benign tumor of the meninges
meningioma
inflammation of the meninges
meningitis
nerve pain
neuralgia
inflammation of the nerves
neuritis
loss of voluntary movement
paralysis
without pain
analgesia
absence of sensation
anesthesia
surgical incision into a nerve
neurotomy
on the same side
ipsilateral
on the opposite side
contralateral