lab 6 nervous tissue

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