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AP 1 Lecture > Nerve test > Flashcards

Nerve test Flashcards

1
Q

Nervous system

A

includes all neural tissue in body

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2
Q

CNS (central nervous system)

A

made up of brain and spinal cord

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3
Q

PNS (peripheral nervous system)

A

outside

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4
Q

Afferent

A

brings impulses from CNS receptors

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5
Q

Efferent

A

brings impulses from CNS to peripheral nerves

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6
Q

Somatic Nervous System (SNS)

A

Controls SM Contractions

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7
Q

Automatic Nervous System (ANS)

A

controls cardiac & smooth muscles

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8
Q

Sympathetic Division

A

Fight or Flight

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9
Q

Parasymapathic Division

A

Rest and Relaxation

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10
Q

Cell Body

A

called somai has large nucleolus

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11
Q

Perikaryon

A

cytoplasm around nucleolus

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12
Q

Neurofilaments & Neurotubles

A

Forms cytoskeleton of cell

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13
Q

Dendrites

A

highly branched processes that stick out from the neuron ;receives info from other neurons

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14
Q

Axon

A

long cytoplasms process; carries impulses

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15
Q

Axoplasm

A

cytoplasm of axon

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16
Q

Axolemma

A

cell membrane

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17
Q

Axon Hillock

A

Thickened region between body and axon

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18
Q

Telodendria

A

fingerlike extension of axon that leads to synaptic knob

19
Q

Synaptic knob/terminal

A

ends of telodendria which contains the vesicles of ACH

20
Q

Synapse

A

site where neurons communicate with another cell. two cells meet at every synapse

21
Q

pre-synaptic cell

A

has the synaptic terminal and sends a message ;usually a neruon

22
Q

post-synaptic cell

A

receives the message can be neuron or other types of cells such as muscle or gland

23
Q

posterior median sulcus

A

a shallow groove along the posterior surface of the spinal cord

24
Q

Anterior median fissure

A

A deep grove along the anterior surface

25
Q

Cervical enlargement

A

supplies nerves to shoulder gridle & upper limbs

26
Q

lumbar enlargement

A

supplies nerves to pelvic gridle & lower limbs

27
Q

spinal cord can be divided into 31 segments based on origins

A
  • C1-C8
  • T1-T12
  • L1-L5
  • S1-S5
  • C0-1
28
Q

Dorsal root ganglia

A

which contain the ‘cell bodies’ of sensory neurons (brings info to spinal cord)

29
Q

Ventral root

A

contains axons of motor neurons which controls somatic and visceral effectors

30
Q

spinal nerves

A

when the “sensory” & “motor” roots are bound together

31
Q

Spinal Cord

A

grows as vertebral column grows until age 4, after age 4, the vertebral column continues to grows but spinal coed does not

32
Q

Spinal meninges layers 3

A
  • dura mater- forms outermost cover of spinal cord
  • Arachnoid- middle layer of meninges contains network of collagen & elastic fibers
  • Pia mater- innermost meningeal layer; has elastic & collagen fibers
33
Q

Anterior gray horns

A

contains somatic motor nuclei

34
Q

lateral gray horns

A

contains visceral motor nuclei

35
Q

Grey commissures

A

connects posterior and anterior sections

36
Q

White matter

A

located on each side of spinal cord; located outside of ‘butterfly’

37
Q

Assending tracts

A

carry sensory info towards the brain

38
Q

Desending tracts

A

convey motor commands from spinall cord

39
Q

3 layers of connective tissue

A

epineum- outer most layer consisting of dense network of collagen fibers
Perineum- middle layer located inward from epineurium
Endoneurium- innermost layer which surronds each axon

40
Q

Nerve Plexus

A

Complex interwoven network of nerves

41
Q

Cervical plexus

A

C1- C5

42
Q

Brachial

A

C5 -T1

43
Q

Lumbar

A

L1- L4

44
Q

Scral plexus

A

L4- S4

AP 1 Lecture (6 decks)

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