Spinal Cord Flashcards

1
Q

___ lies within the vertebral canal and protected by three surrounding fibrous membranes

A

meninges

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2
Q

The spinal cord is held in position by ____ on each side

A

Denticulate ligaments

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3
Q

The spinal cord is held in position by ____ inferiorly

A

filum terminale

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4
Q

[Sensory/Motor]

posterior root

A

sensory

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5
Q

[Sensory/Motor]

anterior root

A

motor

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6
Q

Spinal roots leave the vertebral canal through ___ froamina

A

intervertebral foramina

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7
Q

Spinal cord of the adult end in the level of ___

A

L1

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8
Q

[Region in the spine]

Present lateral horn, round shape

A

Thoracic

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9
Q

[Region in the spine]

absent fasciculus cuneatus,
present fasciculus gracilis,
Absent lateral horn
round shape

A

Sacral

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10
Q

[Region in the spine]

present fasciculus gracilis
present fasciculus cuneatus
absent lateral horn
oval shape

A

cervical

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11
Q

[Region in the spine]

absent fasciculus cneatus
present fasciculus gracilis
present lateral horn
round to oval shape

A

lumbar

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12
Q

What are the columns in the white mater?

A
  1. Posterior funiculus
  2. Lateral funiculus
  3. Anterior funiculus
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13
Q

[What are your ascending tracts]

A
  1. Posterior column

2. Spinothalamic tracts

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14
Q

What are your descending tracts

A
  1. Lateral corticospinal
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15
Q

[Tracts]

responsible for position sense, 2 point discrimination, vibratory sense, steriognosus

A

Posterior column

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16
Q

[Tracts]

crude touch

A

Anterior spinothalamic tract

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17
Q

[Tracts]

pain and temperatyr

A

lateral spinothalamic tract

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18
Q

What are examples of your lateral corticospinal tract?

A
  1. Rubrospinal
  2. Lateral reticulospinal
  3. Medial reticulospinal
  4. Tectospinal
  5. Vestibulospinal
  6. anterior corticospinal
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19
Q

[Lesions of the spinal cord]

Diagnose:

  1. Bilateral motor paralysis
  2. Loss of pain and temperature
A

Anterior cord syndrome

  1. Motor - spinothalamic
  2. Pain and temp - lateral spinothalamic
20
Q

[Lesions of the spinal cord]

Diagnose:
1. Ipsilateral loss of proprioception, vibration, and touch below the level of the lesion

A

Posterior cord syndrom

Remember, dorsal column = proprio, vibration, touch

21
Q

[Lesions of the spinal cord]

Diagnose:

  1. Bilateral motor and sensory deficit
  2. UE>LE weakness
A

Central Cord syndrome

  1. Central corticospinal tract affectec (CT>LS)
  2. Lateral spinal tract = sensory
22
Q

[Lesions of the spinal cord]

Diagnose:
progressive cavitation around the central canal, loss of pain and temperature sensations in hands and forearm

A

Syringomyelia

23
Q

[Lesions of the spinal cord]

Diagnose:
polio virus preferentially attacks the ___ horn cells leading to LMNL

A

Anterior horn cells

24
Q

[Lesions of the spinal cord]

Diagnose:

In tabes dorsalis, what spinal cord roots are affected?

A

dorsal root

25
Q

[Lesions of the spinal cord]

Diagnose:

In tabes dorsalis, aside from the dorsal root, what part of the spinal cord are also affected?

A

dorsal column

26
Q

[Lesions of the spinal cord]

Diagnose:

A pure motor disease involving the degeneration of anterior horn cells and corticospinal tract; no sensory loss

A

ALS

27
Q

[Lesions of the spinal cord]

Diagnose:

  1. Contralateral loss of pain and temperature
  2. Ipsilateral loss of proprioception
  3. Ipsilateral manifestation of the upper and lower motor neuron lesions
A

Brown-Sequard Syndrome

28
Q

Romberg test is a test of ___

A

position sense

29
Q

Pronator drift is a test of ___

A

position sense

30
Q

A positive Romberg test means that the lesion is affecting the ___

A

dorsal column

31
Q

A positive pronator drift test means that there is a ___ lesion

A

corticospinal tract lesion

in the contralateral hemisphere

32
Q

[Eponyms]

Wallenberg

A

Lateral medullary/PICA syndrome

33
Q

[Eponyms]

Millard-Gubler

A

Pons

34
Q

[Eponyms]

Claude

A

Midbrain

35
Q

[Eponyms]

Weber

A

Midbrain

36
Q

[Diagnose]

Loss of pain and thermal sensation on the contralateral side about 1-2 segments below the lesion

A

Anterolatearal syndome

37
Q

Quadriplegia can be due to damage at the level of __

A

C4 to C6

38
Q

Paraplegia can be due to a damage at the level of? ____

A

Thoracic vertebra

39
Q

[Guess the damaged vertebra]

no function below head
needs ventilator

A

C1-C3

40
Q

[Guess the damaged vertebra]

quadriplegia with respiration

A

C4-C5

41
Q

[Guess the damaged vertebra]

loss of lower limb function + loss of hand and variable amount of upper limb function

A

C6-C8

42
Q

[Guess the damaged vertebra]

paraplegia

A

T1 to T9

43
Q

[Guess the damaged vertebra]

some thigh muscle function, long leg braces may be used

A

T10-L1

44
Q

[Guess the damaged vertebra]

most leg muscle function OK, may use short leg brace

A

L2-L3

45
Q

What are the layers traversed by the spinal needle during lumbar puncture

A

SS SILEDAS

  1. Skin
  2. Superficial fascia
  3. Interspinous ligament
  4. Ligamentum flavum
  5. Epidural space
  6. Dura mater
  7. Arachnoid
  8. Subarachnoid space containing CSF
46
Q

In herniating intervertebral disk, the path with least resistance is located in the ___

A

posterolateral

47
Q

Most common level of spina bifida occulta

A

L5 to S1