II - Neurophysiology Flashcards Preview

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Flashcards in II - Neurophysiology Deck (218)
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1

Nerve Cell: permanent cell

neurons

2

Nerve Cell: non-permanent cells

neuroglia/glial cells/supporting cells

3

Nerve Cell: has malignant potential

neuroglia/glial cells/supporting cells

4

Nerve Cell: high in number

neuroglia/glial cells/supporting cells (10:1)

5

Glial Cells: Produces CSF

ependymal cells

6

Glial Cells: Macrophage of the brain

microglia

7

Glial Cells: Regulate ECF ino levels, gives mechanical support, forms BBB (foot processes)

astrocytes (nurse cells)

8

Glial Cells: Creates myelin in the CNS

oligodendrocytes

9

Glial Cells: Creates myelin in the PNS

Schwann cells

10

Glial Cells: Brain tumors from non-mature neurons

neuroblastoma, retinoblastoma

11

Neuron: Receiving portion for neurotransmitter

dendrites, cell body

12

Glial Cells: Where the action potential actually starts

axon hillock

13

Glial Cells: Function of the myelin sheath

insulator

14

Glial Cells: Unmyelinated part of the axon

Nodes of Ranvier

15

Glial Cells: Branches of axons

neural fibril

16

Glial Cells: Terminal portion of a neural fibril that contains NT-containing vesicles

axon terminal/boutons/end-feet

17

Glial Cells: Space between 2 neurons

synapse

18

Axonal Transport: Soma (Cell Body) to Axon Terminal

Anterograde

19

Axonal Transport: Replenishes synaptic vesicles and enzymes for NT synthesis

Anterograde

20

Axonal Transport: Axon terminal to Soma (Cell Body)

Retrograde

21

Axonal Transport: Recycles synaptic vesicle membrane for lysosomal degradation

Retrograde

22

The death of the axon distal to the site of injury after an axon is transected

Anterograde/Orthograde Degeneration (Wallerian)

23

Changes to the soma after an axon is transected

Axonal Reaction/Chromatolysis

24

Axonal regeneration occurs better in the

PNS

25

Used by neurons to communicate with other neurons across synapses, may be excitatory, inhibitory or both

neurotransmitters

26

Acetylcholine: Location

Nucleus Basalis of Meynert, found in many areas

27

Acetylcholine: Synthesis

acetyl CoA + choline (choline acetyltransferase)

28

Acetylcholine: Degradation

degradation precedes reuptake, produces acetyl CoA and choline (acetylcholinesterase), choline is recycled

29

Acetylcholine: Deficiency

Alzheimer's Disease - most common cause of dementia in the elderly

30

Dopamine: Location

Substantia Nigra Pars Compacta, Ventral Tegmental Area