lab 6 nervous tissue
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103 Terms
neuron develop at rate of?
250,000 per minute
how many nerve cells we got by adulthood
100 billion
how many do we really use?
4%
what are our biggest cells?
neurons
messages transmit at speed of?
180
main function of nervous tissue?
senses
transmitting and processing information
producing resposne
major compnent of nervous system
cns
pns
cns is?
central nervous system - brain and spinal cord
pns is?
peripheral nervous system - nerves away from cns and ganglia
1?
cns
2?
cerebrum
3?
cerebellium
4?
spinal cord
5?
cranial nerves
6?
spinal nerves
7?
ganglia
8?
pns
two main cells in nerve tissue?
neurons
glialcells
?
bipolar nueron
?
pseudounipolar neuron
?
multipolar nueron
?
glial cell
neuron structure
cell body
nucelus
dendrite
axon temrina;
node of ranvier
myelin sheath
what is this?
cerebrum
top?
cortex layer
middle
gray matter
bottom
white matter
cns has
organs
spinal cord
regions
grey and white matter
left arrow
glia
right arrow?
neurons
where is this?
cerebrum
what is the deep grove called
logitudianl fissure
right half of cerebrum corntrols
left side of body
cerebrum is the
largest part of human brain
what is this?
multipolar nueron
single axon
many dendrites
mulitpolar neuron located?
cns
multipolar neuron fucntion?
convey impulses
what this are?
pyrimidial cells
pyrimidail cell also a
multipolar neuron
pyrimidial cell found in?
brain like cerebral cortex
fucniton of pyrimidial nueron
excitaroy cell trype
what is the cerebellum composed of folds called?
folia
these folds have what?
cortical gray matter, medullary white matter
white matter is where?
inside
what are the three layers of gray matter
molecular layer, purkinje layer, granular layer
1?
purkinje layer
2?
granular layer
3?
molecular layer
4?
white matter
5?
granular layer
location?
cerebellum
1?
purkinje cells
2?
granule cell layer
3?
grey matter
4?
purkinje cell layer
5?
molecular layer
6?
white matter
location
cerebellum
1?
inferior horn of the lateral ventricle
2?
hippocampus
3?
dentate gyrus
4?
polymorphic cell layer
5?
subiculum
6?
molecular layer
7?
pyrimidial cell layer
location
cerebrum
locations
spinal cord
1?
dorsal horn left
2?
central canal
3?
dorsal
4?
dorsal horn right
5
grey matter
6
ventral horn right
7
ventral horn left
8
ventral
9
white matter
10
ventral root
11
dorsal root
1?
epinerium
2?
dissolved myelin sheath
3?
axon
4?
schwann cell nucleus
5?
endonerium
6?
perineurium
what is this
peripheral nerve
what is this?
peripheral nerve
?
node of ranvier
?
peripheral nerve (cross section)
?
sympathetic ganglion cells
left
neurophil
middle
astrocyte
right
astrocytes oligodendrocytes
what is thei?
purkinje cells
where?
cerebellum
astrocyte location
CNS
oligodendrocyte location
CNS
schwann cell locarion
PNS
ependymal cell location
CNS
microglila cell location>?
CNS
oligendorcyte and schwann cell function
makes myelin and insulates axons