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3 - Clinical Skills > Sensory System > Flashcards

Sensory System Flashcards

1
Q

Peripheral Nerve

A

Part of spinal nerve distal to the spinal nerve root and plexus
Bundles of nerve fibres from more than one dermatome

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2
Q

Mononeuropathy

A

Peripheral nerve damaged individually (trauma/compression)

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3
Q

What is a common cause of peripheral neuropathy?

A

Diabetes

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4
Q

Ulnar nerve

A

Little finger and medial part of ring finger

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5
Q

Median Nerve

A

First 3 fingers (thumb, pointer, middle)

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6
Q

Radial Nerve

A

Tissue next to thumb

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7
Q

Sciatic nerve

A

Backside of leg entire

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8
Q

Lateral cutaneous nerve

A

Anterior part of thigh (lateral)

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9
Q

Femoral nerve

A

Medial anterior part of thigh, passes knee

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10
Q

Peroneal nerve

A

Foot and lateral part of shin

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11
Q

Spinal nerve organization

A

Ventral motor root

Dorsal sensory root

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12
Q

Dermatome

A

Area of skin supplied by a single spinal nerve from a single sensory root

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13
Q

C5

A

Lateral/radial side of antecubital fossa just proximal to elbow

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14
Q

C6

A

thumb

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15
Q

C7

A

Middle finger

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16
Q

C8

A

Little finger

17
Q

T1

A

Medial/ulnar side of antecubital fossa just proximal to elbow

18
Q

T4

A

Level of nipples

19
Q

T10

A

Horizontal level of umbilicus

20
Q

L2

A

Antero-lateral upper thigh

21
Q

L3

A

Medial aspect distal thigh/knee

22
Q

L4

A

Great toe, medial malleolus

23
Q

L5

A

3rd toe

24
Q

S1

A

Calcaneus, lateral malleolus, 5th toe

25
Q

Dorsal columns

A

Carry sensory information about fine touch, vibration and joint position (TVP)
Run on ipsilateral side of spinal cord until they reach medulla = cross

26
Q

Spinothalamic Tract

A

Pain and temperature sensation
Fibres enter spinal cord, synapse in dorsal horn and then travel in contralateral side to thalamus and reticular formation

27
Q

Why is light touch examination least helpful in determining site of lesion?

A

Fibres relaying info about light touch travel in both the posterior columns and anterior spinothalamic tract

28
Q

When does Brown Sequard syndrome occur?

A

When one half of the spinal cord is damaged

  • ipsilateral motor weakness and loss of vibration/joint position sense
  • contralateral loss of pain and temperature
29
Q

Hemi-neglect

A

Lesions affecting right parietal lobe

Neglect visual, somatosensory or auditory stimuli on left side

29
Q

Hemi-neglect

A

Lesions affecting right parietal lobe

Neglect visual, somatosensory or auditory stimuli on left side

30
Q

What is the key test stimulus when using the neurotip?

A

Sharp - limit the number of dull checks

31
Q

What is tested in the sensory exam?

A

Light touch
Superficial pain
Proprioception - Joint Position Sense
Vibration

3 - Clinical Skills (9 decks)

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