13. Nervous System (Injuries/Disorders) Flashcards Preview

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Flashcards in 13. Nervous System (Injuries/Disorders) Deck (79)
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1

Least severe nerve injury: Damage of MYELIN SHEATH resulting to temporary loss of nerve function but reversible

Neuropraxia

2

Nerve injuries that are capable of regeneration

Neuropraxia
Axonotmesis

3

Nerve injury WITHOUT wallerian degeneration

Neuropraxia

4

Nerve injuries WITH wallerian degeneration

Axonotmesis
Neurotmesis

5

Nerve injury NOT CAPABLE of regenerating (rate: nerve grafts can be used)

Neurotmesis

6

Damage of AXON and MYELIN SHEATH (Naputol ung axon)

Axonotmesis

7

Most severe nerve injury
Damage of EPI/PERI/ENDONEURIUM

Neurotmesis

8

What part of the nerve is degenerated in axonotmesis

Distal segment of axon

9

Outermost layer of axon

Epineurium

10

Middle layer of axon

Perineurium

11

Innermost layer of axon

Endoneurium

12

Average nerve regeneration

1.0-1.5mm/day

13

Beq: Average nerve regeneration for 30days

30-45mm/day
30*1 /// 30*1.5

Boards: 28mm/30days!

14

PNS neuroglia that provides structural support

Satellite cells

15

Largest nerve fiber

A fibers

16

Smallest nerve fiber

C fibers

17

Nerve fiber with FASTEST nerve conduction

A fibers

18

Nerve fiber with SLOWEST nerve conduction

C fibers

19

Myelinated nerve fibers

A and B fibers

20

Unmyelinated nerve fiber

C fibers

21

Specific nerve fiber for touch

A beta fibers

22

Specific nerve fiber for FAST SHARP PAIN

A Delta (“Dolor=Pain”)

23

Nerve fibers for sensations from Visceral organs

B fibers (Visceral - “B” “V”)

24

Nerve fibers for SLOW DULL PAIN

C fibers (“C-low”)

25

Neurotransmitters that CREATES action potential
- allows entry of CA+IONS (Na+)

Excitatory nt

26

Neurotransmitters that PREVENT action potential
- allows entry of ANIONS (Cl-)

Inhibitory nt

27

What type of nt is DOPAMINE (mood)

Excitatory nt 😊

28

What type of nt is DOPAMINE (in MOTOR neurons)

Inhibitory nt

29

5 examples of EXCITATORY nt

GADoNS
Glutamate
Ach
Dopamine (mood)
Norepi
Serotonin

30

4 examples of inhibitory nt

Melatonin
Dopamine (motor)
Glycine
GABA