Shared Flashcard Set

Details

Nervous System Flashcards
Nervous system flashcards
176
Veterinary Medicine
Professional
03/28/2006

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
thickening of nervous tissue during embryogenesis
Definition
neural plate
Term
during embryogenesis, it develops in the neural plate and pushes on the tissue
Definition
neural groove and folds
Term
Neural tube development
Definition
tube closes dorsally and comes together to form a complete tube
Term
What forms from the neural crest?
Definition
1. dorsal root ganglia, 2. sensory ganglia associated with cranial nerves, 3. autonomic ganglia, 4. adrenal medulla cells
Term
collection of cell bodies outside the CNS
Definition
ganglia
Term
during primary vesicle stage-the most rostral part that forms the forebrain
Definition
prosencephalon
Term
during primary vesicle stage-the middle part-forms the midbrain
Definition
mesencephalon
Term
during primary vesicle stage-most caudal part-forms hindbrain
Definition
rhombencephalon
Term
secondary vesicle stage-most rostral part that develops from the proenceph.
Definition
telencephalon
Term
secondary vesicle stage-second most rostral part-formed from proenceph.
Definition
diencephalon
Term
secondary vesicle stage-middle part that develops from the mesenceph.
Definition
mesencephalon
Term
seconary vesicle stage that is second most caudal-forms from rhombenceph.
Definition
metencephalon
Term
secondary vesicle stage-most caudal part-forms from rhombenceph.
Definition
myelencephalon
Term
fluid filled cavity part of brain-hollow spaces filled with ventricular fluid
Definition
ventricular system
Term
ventricles with left and right parts within the telencephalon (vent. #1 and #2)
Definition
lateral ventricles
Term
communication between the lateral ventricles and the third ventricle
Definition
intraventricular foramen
Term
ventricle at level of diencephalon, circular shape
Definition
third ventricle
Term
structure caudal to the third ventricle-fluid flows to the 4th ventricle through this
Definition
mesencephalic aqueduct
Term
ventricle around cerebellum
Definition
fourth ventricle
Term
the left and right openings of the 4th ventricle
Definition
lateral apertures (foramena of lusca)
Term
where does the fluid that flows through the lateral apertures go?
Definition
fluid goes to subarachnoid space
Term
caudal opening of the 4th ventricle
Definition
caudal aperture (foramen of magende)
Term
where does the fluid that flows through the caudal aperture go?
Definition
fluid goes to spinal chord
Term
opening at the rostral end where the neural tube hasn't fused
Definition
rostral neuropore
Term
opening at the caudal end of the neural tube that hasn't fused
Definition
caudal neuropore
Term
condition where the rostral neuropore fails to fully close
Definition
anencephali-means without brain
Term
condition where caudal neuropore fails to fully close
Definition
spina bifida
Term
brain flexure that is at the ventral tube
Definition
midbrain
Term
brain flexure at the dorsal tube
Definition
pontine
Term
brain flexure at about the junction of the brain stem and spinal chord
Definition
cervical
Note: degree of bend depends on species (ex. dog has almost no bend, human has 90 degree bend)
Term
components of the CNS
Definition
brain and spinal chord
Term
components of the PNS
Definition
ganglia and processes
Term
components of ANS
Definition
features of both CNS and PNS
Term
outer most layer of the spinal chord formed by processes
Definition
marginal layer (white matter)
Term
middle layer of the spinal chord made up of cell bodies
Definition
mantle layer (gray matter)
Term
deepest layer of the spinal chord made up of ependyma (epi cells)
Definition
germinal layer (ependymal layer)
Term
the limiting groove of the spinal chord, separates cells with seonsory function from cells with motor
Definition
sulcus limitans
Term
the dorsal plate of the spinal chord-has sensory function
Definition
alar plate
Term
ventral plate of the spinal chord with motor function
Definition
basal plate
Term
gray matter on the surface of the brain
Definition
cortical gray matter
Term
gray matter under the surface of the brain (groups of cells)
Definition
subcortical gray matter (nucleus)
Term
matter located deep to the cortical grey matter that is organized in tracts
Definition
white matter
Term
gray matter arrangement in the spinal chord
Definition
arranged in dorsal/ventral/lateral horns
Term
white matter arrangement in the spinal chord
Definition
surrounds the gray matter on the surface
Term
gray matter in the peripheral nervous system includes:
Definition
1. dorsal root ganglia, 2. autonomic ganglia, 3. ganglia of sensory cranial nerves, 4. ganglia of motor cranial nerves
Term
white matter in the PNS includes:
Definition
axons from cell bodies (everything else)
Term
division of myelencephalon that is most rostral on the ventral surface.
Definition
trapezoid body
Term
only caudal part is in the myelencephalon-tube doesn't fuse completely and formes it
Definition
fourth ventricle
Term
identifying feature of metencephalon on the ventral side
Definition
transverse fibers of the pons
Term
dorsal projection of the metencephalon
Definition
cerebellum
Term
cerebellum connected by this, 3 pairs on each side, connects cerebellum to brain stem
Definition
cerebellar peduncles
Term
cranial portion of the ventricle is in the metencephalon
Definition
fourth ventricle
Term
stalk like bundles on the ventral side of the mesencephalon
Definition
crus cerebri
Term
2 bumps found on the lateral side of the mesencephalon
Definition
rostral colliculus
Term
2 bumps on the lateral side of the mesencephalon (caudal)
Definition
caudal colliculus
Term
collective structure of both rostral and caudal colliculus
Definition
corpora quadrigemina
Term
area on top of mesencephalon with rounded surfaces-the roof portion
Definition
tectum
Term
the floor of the mesencephalon
Definition
tegmentum
Term
space that connects the 3rd and 4th ventricle-passage for cerebral spinal fluid
Definition
mesencephalic aqueduct
Term
components of diencephalon
Definition
1. thalamus, 2. epithalamus, 3. metathalamus, 4. subthalamus, 5. hypothalamus
Term
the rostral part of the diencephalon where optic nerves enter and cross
Definition
optic chiasm
Term
the caudal extent of the diencephalon
Definition
mammillary body
Term
on the lateral side of the diencephalon-bundles that run over it
Definition
optic tract
Term
lateral and medial parts that make up the metathalmus near the optic tract
Definition
geniculate body
Term
ventricle with the diencephalon
Definition
third ventricle
Term
the large nuclear area of the diencephalon
Definition
thalamus
Term
along the dorsal midline of the diencephalon
Definition
epithalamus
Term
the glue that attaches the diencephalon to the mesencephalon
Definition
subthalamus
Term
the part of the diencephalon that can be seen ventrally
Definition
hypothalamus
Term
the part of the brain that forms a cap over the rostral brain stem
Definition
telencephalon
Term
left and right parts of the telecephalon
Definition
cerebral hemisperes=cerebrum
Term
ventricles within the 2 cerebral hemispheres
Definition
lateral ventricles
Term
function of the ANS
Definition
coordinate internal environment based on external stimuli-controls viceral activity and emotional behavior
Term
divisions of the ANS
Definition
sympathetic and parasympathetic (in opposition of eachother)
Term
what is the central control of the ANS
Definition
hypothalmus (3rd neuron that regulates)
Term
name of the type of innervation where norepinephrine is the target neurotransmitter
Definition
adrenergic innervation
Term
name of the type of innervation where actylcholine is the target neurotransmitter
Definition
cholonergic innervation
Term
what neurotransmitter is released at the ganglia where the pre and post fiber synapse
Definition
acetylcholine
Term
the ANS devision responsible for fight or flight
Definition
sympathetic NS
Term
where the sympathetic preganglionic cell bodies are found
Definition
lateral horn of the thoracolumbar
Term
ganglia next to the vertebral column, part of the sympathetic trunk
Definition
paravertebral ganglion
Term
name the paravertebral ganglion
Definition
1. cervicothoracic, 2. middle cervical, 3. cranial cervical
Term
ganglia found in front of vertebral column, associated with major vessels of aorta
Definition
prevertebral ganglia
Term
name the prevertebral ganglia
Definition
1. celiac, 2. cranial mesenteric, 3. caudal mesenteric, 4. other (close to the adrenal gland, scattered along aorta, scattered along kidney)
Term
the communicating branch that takes sympathetic innervation from origin to the periphery (communcation b/t sympathetic and spinal nerves)
Definition
ramus communicans
Term
innervation to the sweat glands
Definition
sudomotor
Term
innervation to erector pili muscles
Definition
pilomotor
Term
innervation to smooth muscles
Definition
vasomotor
Term
examples of pregang. sympathetic named nerves
Definition
major and minor splanchic nerves, lumbar splanchic nerves
Term
examples of post gang. sympathetic named nerves
Definition
hypogastric nerves, vertebral nerves
Term
ANS devition for rest and recovery
Definition
parasympathetic NS
Term
where cells are located for the parasymp.
Definition
craniosacral origin
Term
location of preganglionic cell bodies in the cranial region
Definition
CN 3, 7, 9, 10
Term
location of preganglionic cell bodies in sacral region
Definition
lateral horn of sacral spinal chord
Term
location of postganglionic cell bodies in cranial parasymp.
Definition
CN 3, 7, 9 (named), 10 (terminal)
Term
location of postganglionic cell bodies in sacral parasymp.
Definition
terminal ganglion
Term
ganglia located in the wall of the organ that is innervated
Definition
terminal ganglion
Term
ganglion that goes to a named nerve
Definition
named ganglion
Term
what is the common name for the CN 3 nucleus
Definition
edinger westphal nucleus
Term
where the preganglionic CN 3 synapses
Definition
ciliary ganglion
Term
the names of the parasymp. nucleus of CN 7
Definition
rostral salivatory, lacrimal
Term
what does the rostral salivatory parasymp. nucleus of CN 7 synapse
Definition
mandibular ganglion
Term
where does the lacrimal parasymp. nucleus of CN 7 synapse
Definition
pterygopalatine ganglion
Term
name of the parasympathetic nucleus of CN 9
Definition
caudal salivatory
Term
where the caudal salivatory of the parasymp. nucleus synapses
Definition
otic ganglion
Term
the name of the parasymp. nucleus of CN 10
Definition
dorsal vagal nucleus
Term
where the dorsal vagal nucleus of the parasymp nucleus synapses
Definition
at a terminal ganglia
Term
where the parasympathetic sacral neurons synapse
Definition
at a terminal ganglia
Term
site of spinal chord termination in the dog
Definition
L6 or L7
Term
site of spinal chord termination in equine
Definition
S1-S2
Term
site of spinal chord termination of bovine
Definition
L6
Term
site of spinal chord termination in the cat
Definition
L6
Term
the fattened part of the spinal chord located at about C6-T2, where brachial plexus originates
Definition
cervical intumescence
Term
the fattened part of the spinal chord around L5-S1
Definition
lumbar intumescence
Term
the CT covering and termination of spinal chord
Definition
conus medullaris
Term
the extention of dural covering composed of glial cells, etc. suspends the spinal chord in the canal
Definition
filum terminale
Term
the lumbar, sacral, and coccygeal nerve roots after termination of SC
Definition
cauda equina
Term
the very small delicate fibers that form the spinal roots
Definition
spinal rootlets
Term
the names of the devisions of white matter
Definition
1. dorsal funiculus, lateral funiculus, ventral funiculus
Term
what are the devisions of the gray matter called?
Definition
1. dorsal horn, ventral horn, lateral horn
Term
what would a lesion in the dorsal horn cause
Definition
a sensory deficit
Term
what would a lesion in the ventral horn cause
Definition
motor deficit
Term
structure on the ventral surface of the myelencephalon that are bundles on the left and right
Definition
pyramids
Term
what is the function of the pyramids of the mylenceph.
Definition
a part of the motor system
Term
the crossing of the pyramid bundles from side to side
Definition
pyramidal decussation
Term
the bump about midway on the pyramids of the myelenceph., a synapse for the motor system
Definition
olive
Term
the most rostral structure on the ventral surface of the mylenceph.
Definition
trapezoid body
Term
what is the function of the trapezoid body
Definition
part of the auditory system
Term
fiber bundles on the dorsal surface of the myelenceph. close to dorsal sulcis
Definition
fasciculus gracilis
Term
fiber bundles more lateral to the fasciculus gracilis on the dorsal surface of the myelenceph.
Definition
fasciculus cuneatus
Term
what are the functions of the fasciculus gracilis and the fasciculus cuneatus
Definition
conscience propriaception (know where your limbs are out in space) FG=pelvic limbs, FC=thoracic limbs
Term
structure more lateral to fasciculus cuneatus on the dorsal side of the myelenceph.
Definition
spinal tract of the trigeminal nerve
Term
what is the function of the spinal tract of the trigeminal nerve
Definition
carries pain and temperature impulse
Term
the topographic term of the caudal angle of the 4th ventricle
Definition
obex
Term
the CT covering of apendyma and pia, covers the top half of the 4th ventricle
Definition
caudal medullary velum
Term
seperates the dorsal and ventral parts of the ventricular system of the myelenceph.
Definition
sulcus limitans
Term
which cranial nerves pass through the myelenceph.
Definition
six through twelve
Term
structure on the ventral surface of the metencephalon that takes info from motor system to the cerebellum
Definition
transverse fibers of the pons
Term
structure under the transverse fibers of the pons. carry motor to the brain and spinal chord
Definition
longitudinal fibers of the pons
Term
what are the functions of the transverse and longitudinal fibers of the pons
Definition
part of the motor system
Term
structure on the dorsal surface of the metenceph. that processes motor and sensory imputs
Definition
cerebellum
Term
what are the functions of the cerebellum
Definition
1. regulate motor activity, 2. coordinates motor activity, 3. integrates motor activity
Term
the structure that connects the cerebellum to the brain stem
Definition
cerebellar peduncles
Term
what are the devisions of the cerebellar peduncles
Definition
1. middle (lateral), 2. caudal (middle), 3. rostral (medial)-names refer to connections
Term
the delicate membrane that forms the roof that closes off the opening of the rostral 4th ventricle
Definition
rostral medullary velum
Term
the cranial nerves associated with the metencephalon
Definition
CN 5
Term
structure on the ventral surface of the mesencephalon
Definition
crus cerebri (left and right)
Term
the function of the crus cerebri
Definition
has fibers for the motor system
Term
the fossa between the left and right crus cerebri
Definition
interpeduncular fossa
Term
the structure on the dorsal surface of the mesencephalon
Definition
corpora quadrigemina (rostral colliculus and caudal colliculus)
Term
the function of the rostral colliculus
Definition
process info that participates in reflex activity of the visual system
Term
function of the caudal colliculus
Definition
process info that participates in reflex activity of the auditory system
Term
structure that interconnects the 3rd and 4th ventricles in the mesencephalon
Definition
mesencephalic aqueduct
Term
what are the nerves associated with the mesenceph
Definition
CN 3 and CN 4
Term
which CN is the only one that exits on the dorsal side?
Definition
CN 4 in the mesencephalon
Term
the structure on the ventral surface of the diencephalon that is the caudal aspect of the hypothalmus
Definition
mammillary bodies
Term
the function of the mammillary bodies
Definition
regulate and modify emotions of the ANS
Term
the stalk where the pituitary used to be attached
Definition
tuber cinereum
Term
the rostral extent of the diencephalon on the ventral side where the optic nerve enters and crosses
Definition
optic chiasm
Term
where the optic nerves pass laterally in the diencephalon-takes visual stimulus to the brain
Definition
optic tract
Term
structure on the dorsal surface of the diencephalon that is a synaptic sight of the visual system
Definition
lateral geniculate body
Term
structure on the dorsal surface of the dienceph. that is the synaptic site in the auditory system
Definition
medial geniculate body
Term
the ventricle located in the dienceph.
Definition
third ventricle
Term
the post like structure that is in the middle of the 3rd vent., the cut surface of the thalmus
Definition
interthalamic adhesion
Term
the nerve associated in the dienceph.
Definition
CN 2
Term
structure on the ventral surface of the telenceph. at the rostral edge-synapse in smelling pathway
Definition
olfactory bulb
Term
structure on the ventral surface of the telenceph caudal to the olfactory bulb
Definition
pyriform lobe (olefactory cortex)
Term
ridges on the dorsal surface of the telenceph.
Definition
gyrus/gyri
Term
grooves of the dorsal surface of the telenceph.
Definition
sulcus/sulci
Term
the ventricles located in the telenceph.
Definition
the left and right lateral ventricles
Term
the foramen that connects the lateral ventricles to the 3rd ventricle
Definition
interventricular foramen
Term
the nerves in the telenceph.
Definition
CN 1-synapses on olefactory bulb
Term
the fiber system of the white matter that are acending or decending between the cerebrum and the brain stem
Definition
projection fibers
Term
the fiber system of the white matter that are long or short
Definition
association fibers
Term
what are the functions of the long and short association fibers of white matter
Definition
long-take info between lobes of cerebellum (interlobar), short-take info between gyri within one lobe (intralobar)
Term
the fiber system of the white matter that cross from left to right halves of the cerebrum
Definition
commissural fibers
Supporting users have an ad free experience!