Exam 1 - 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 - cervical enlargement

T9-T12 - the lumbar (lumbosacral) enlargement

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3
Q

Where is the gereatest transverse diameter of the spinal cord?

A

C6

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4
Q

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

A

midsagittal / 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 level 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 vertebra
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 orginate from the conus medullaris?

A

typically S4 S5 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 fiulum 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 internum appear to innervate?

A

lower limbs

and the external anal sphincter

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16
Q

The last arterial vasa corona creates what feaure on angiogram?

A

cruciate anastomisis

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