Week 1

Question 1

Neuron cell bodies size

Answer 1

15-20 um

Question 2

Nissl bodies size

Answer 2

50 um

Question 3

Gap/synapses between motor neuron vs membrane of muscle fibre

Answer 3

30-50nm

Question 4

oligodendrocyte size

Answer 4

10 20 um

Question 5

grey matter contains

Answer 5

soma, dendrites, axon terminal, synapses, glia

Question 6

white matter contains

Answer 6

mylinated axon + glia

Question 7

grey matter function

Answer 7

intergration of information

Question 8

white matter function

Answer 8

• impulses propagate here
• information travel here

Question 9

rER stands for?

Answer 9

rough endoplasmic reticulum

Question 10

rER aslo called?

Answer 10

nissl body

Question 11

rER important

Answer 11

protein synthesis

Question 12

Neuron types

Answer 12

• sensory vs motor
• projection or stay still

Question 13

sensory neuron

Answer 13

• bipolar, pseudounipolar (split)
• receive sensory information

Question 14

short, stay within the local area

Answer 14

interneuron
golgi type 2

Question 15

projection motor

Answer 15

long, out of brain and spinal cord (multipolar)
golgi type 1

Question 16

contain cell bodies outside CNS

Answer 16

dorsal ganglion

Question 17

action potential

Answer 17

membrane is polarised
inside more negative

Question 18

type of input action potential

Answer 18

chemical: neurotransmitter
mechanical: pressure/ stretch of receptors at nerve ending in skin/muscle/bbb
thermal: thermo receptor
special sensory: taste. light proton…

Question 19

speed with myelin vs without

Answer 19

12-130 vs 0.5 - 2 (m/s)

Question 20

gap between motor neuron and plasma membrane

Answer 20

30 - 50 nm

Question 21

motor neuron support how many muscle cell

Answer 21

3 to 100

Question 22

neuroplasticity

Answer 22

change in shape + function + connection

Question 23

Cells in nervous system

Answer 23

glia
neuron
endothelial

Question 24

glia include

Answer 24

astrocyte
oligodendrocyte
microglia

Question 25

endothelial cell associates with

Answer 25

blood supply, supporting BBB

Question 26

CNS contains cells:

Answer 26

neuron
glia (oligodendrocyte, microglia, astrocyte)
endothelial

Question 27

PNS contains cells:

Answer 27

satelite cells
schwann cells

Question 28

myelinating cells

Answer 28

schwann + oligodendrocytes

Question 29

myelin sheath

Answer 29

fatty insulating layer

Question 30

myelinated axon

Answer 30

motor to skeletal muscle, sensory fine touch fromskin, proprioceptors body position

Question 31

unmyelinated axon

Answer 31

sensory pain from skin, motor heart + blood vessel

Question 32

neurilemma

Answer 32

outermost section of schwann cells surrounding axon

Question 33

oligodendrocyte

Answer 33

myelinate many axon

Question 34

schwann

Answer 34

need various to myelinate one

Question 35

astrocyte func

Answer 35

• metabolic support for bbb
• structural support for cns (brain + spinal cord)
• endothelium for tight junction bbb (not tight only endothelial)
• biochemical balance neuron (lactate)
• scar (fill where neuron die)
• support synapses form(buffer K+ prevent synaptic dysfunc)
• glutamine for synthesis

Question 36

microglia

Answer 36

immune (survey CNS for pathogen)
injury: repair
prune synapses remodelling adult brain
tile grey matter
laser injury hippocampus
injury retina
change shape activate shorten thicken

phagocytosis
find eat digest

Question 37

ependymal cells

Answer 37

creating cerebrospinal fluid

Question 38

PNS satellite cells

Answer 38

surround neuron in
- sensory
- sympathetic
- parasympathetic
- ganglia
- regulate chemical environment

Question 39

myelin stain view?

Answer 39

oligodendrocyte bodies

Question 40

golgi silver stain

Answer 40

full morphology of neuron
include dendritic arbor + axon

Question 41

immunohistochemistry

Answer 41

distinguish diverse cell types
neuron vs glia
different glia

Question 42

morphology

Answer 42

shape of cells

Question 43

morphology types

Answer 43

bipolar, multipolar, unipolar..