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AP 1 > Nerves > Flashcards

Nerves Flashcards

1
Q

Nerve Hierarchy

A

Organ - nerve
Bundles - fascicles
Cells - fibers

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2
Q

Nerve coverings

A

Epineurium
Perineurium
Endoneurium

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3
Q

Plexus of Cervical Spine

A

Cervical and Brachial

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4
Q

Phrenic Nerve

A

Diaphragm for Breathing

C3, C4, C5

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5
Q

Brachial Plexus

A 
C5-8; T1
Axillary
Musculocutaneus
Radial
Median
Ulnar
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6
Q

Axillary n. Roots and innervation

A

C5, C6

Shoulder/Armpit

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7
Q

Musculocutaneus

A

C5, C6, C7

Biceps

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8
Q

Radial n. Roots and innervations

A

C5, C6, C7, C8, T1

Thumb side - Extensors

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9
Q

Median n. Roots and innervations

A

C5 - T1

Flexors

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10
Q

Ulnar n. Roots and innervations

A

C8, T1

Pinky side

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11
Q

Thoracic

A

T1-T12

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12
Q

Lumbasaccral plexus

A

Lumbar: L1 - L4

Sacral (L4, L5, S1 - S4)

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13
Q

Femoral n. Roots and innervations

A

L2, L3, L4

Quadriceps

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14
Q

Obturator n. Roots and innervations

A

L2, L3, L4

Adductors

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15
Q

Gluteal n. Roots and innervations

A

L4, L5, S1, S2

Butt

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16
Q

Sciatic n. Roots and innervations

A

L4, L5, S1, S2, S3

Back of leg and lower leg

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17
Q

Pudendal n. Roots and innervations

A

S2, S3, S4

Crotch

18
Q

Spinal Tracts (Descending)

A

Motor Tracts

  1. Cortico-spinal
  2. Vestibulo-spinal
19
Q

Spinal Tracts

Ascending

A

Sensory tract

  1. Dorsal columns
  2. Spino/cerebelar
  3. Spino/thalamic
20
Q

Cortico-spinal: type of motion

A

Voluntary motion

21
Q

Vestibulo-spinal:

Type of motion

A

Involuntary balance motion

22
Q

Dorsal columns:

Type of senses

A

Touch, pressure, sensations

23
Q

Spino/cerebelar

A

Balance input

24
Q

Spinothalamic:

What does it sense?

A

Pain and temperature

25
Q

Reflex Arc (1-5)

A
  1. Sensor
  2. Afferent neuron
  3. Integration Center
  4. Efferent neuron
  5. Muscle
26
Q

Interneuron location

A

In spinal cord between sensory and motor neuron

27
Q

Interneuron job

A

Spinal splitter - allow you to talk other muscles

28
Q

Up and Down Regulation of Neurotransmitter

A

Down regulate EPSP (stimulants) - less number of receptors for every use of EPSP

29
Q

Biogenic Amino Neurotransmitters

A

Norepinephrine
Dopamine
Serotonin

30
Q

Norepinephrine: Function and Location

A

EPSP/IPSP

CNS/PNS

31
Q

Dopamine: Function and Location

A

EPSP/IPSP

CNS/PNS

32
Q

Serotonin: function and location

A

IPSP

CNS/PNS

33
Q

Amino Acid - Neurotransmitters

A

GABA
Glycine
Glutamate
Aspartate

34
Q

GABA - function and location

A

IPSP

CNS

35
Q

Glycine: function and location

A

IPSP

CNS

36
Q

Glutamate

A

EPSP

CNS

37
Q

Aspartate

A

EPSP in CNS

38
Q

Neuropeptides - Neurotransmitters

A

Substance P

Endorphins

39
Q

Substance P - Function and Location

A

EPSP

CNS/PNS

40
Q

Endorphins - function and location

A

IPSP

CNS

41
Q

What are the steps for how the action potential moves down the axon

A
  1. Neuron at “RMP” (-70mV)
  2. Stimulus occurs
  3. Some of the Na+ channels open
  4. Na+ enters neuron
  5. If enough Na+ enters, reaches “Threshold” (-55mV)
  6. Begin an Action Potential - “Impulse”
  7. Open more Na+ channels (voltage-gated Na+ channel)
  8. Lots of Na+ rushes into neuron
  9. Inside of neuron becomes positive (DEPOLARIZE)
  10. Additional Na+ open downstream toward axon
  11. After Depolarization = close Na+ channels
  12. Open K+ channel
  13. K+ rushes out of neuron (REPOLARIZE)
  14. Close K+ channels
  15. Na+/K+ Pump w/ ATP: pumping until return to RMP

AP 1 (7 decks)

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