Spinal Cord Flashcards

1
Q

In horizontal view, what direction of the spinal cord tends to be the largest?

A

Transverse

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2
Q

What are the spinal cord enlargement locations and the name given to each?

A

C3-T1, The cervical enlargement

T9-T12, The lumbar (lumbosacral) enlargement

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3
Q

Where is the greatest transverse diameter for the spinal cord?

A

C6

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4
Q

In which plane (or direction) will the diameter of the spinal decrease from C2 down to T1?

A

Midsagittal or anterior-posterior plane

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5
Q

What spinal nerves originate from the lumbar (lumbosacral) enlargement?

A

L1-S3 spinal nerves

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6
Q

What is a generic cord level of origin - vertebral combination for the lumbar (lumbosacral) enlargement?

A

L1, L2 cord levels in T9 vertebra
L3, L4 cord levels in T10 vertebra
L5, S1 cord levels in T11
S2, S3 cord levels in T12 vertebra

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7
Q

What is the caudal end of the spinal cord called?

A

Conus medullaris

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8
Q

What spinal nerves originate from the conus medullaris?

A

Typically S4, S5, and Co1

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9
Q

In which vertebral foramen will the conus medullaris typically be observed?

A

L1

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10
Q

What is the name given to the nerve roots below L1

A

Cauda Equina

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11
Q

What is the continuation of pia mater below the conus medullaris called?

A

Filum terminale internum

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12
Q

What is the location and name given to the area where all meninges first converge at the caudal part of the vertebral column?

A

Typically S2, the dural cul de sac

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13
Q

Neural tissue has been identified in what part of the filum terminale?

A

Proximal part of the filum terminale internum

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14
Q

What is the fate of the neural tissue identified along the filum terminale internum?

A

it joins peripheral nerve roots of spinal nerves as high as L3 and as low as S4

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15
Q

What does the neural tissue associated with the filum terminale appear to innervate?

A

Lower limbs and the external anal sphincter

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16
Q

The last arterial vasa corona creates what feature on angiogram?

A

Cruciate anastomosis

17
Q

What is the name given to the condensation of meninges below S2?

A

Filum terminale externum

18
Q

What is the name given to the caudal attachment of the meninges?

A

Coccygeal medullary vestige

19
Q

What is the name given to the condition in which the conus medullaris is located below L1 and the filum terminale is thickened?

A

Tethered cord syndrome

20
Q

What is the relationship between scoliosis and tethered cord syndrome?

A

It is suggested that the column will change normal curvatures to mitigate damage to the spinal cord caused by a tethered cord