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Anatomy > 16. Vertebral Canal and Contents > Flashcards

16. Vertebral Canal and Contents Flashcards

1
Q

What are the two ligaments of the vertebral body?

A

Anterior longitudinal ligament

Posterior longitudinal ligament

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2
Q

Where does the anterior longitudinal ligament run from and to?

A

From skull base right down to the sacrum

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3
Q

What is the function of the anterior longitudinal ligament?

A

Limits extension

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4
Q

Where does the posterior longitudinal ligament run from and to?

A

From C2 to sacrum

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5
Q

What is the function of the posterior longitudinal ligament?

A

Prevents posterior herniation of IV disc

also weakly limits flexion

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6
Q

Where does the ligamenta flava run between?

A

Between lamina of adjacent vertebrae

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7
Q

What is the function of the ligamenta flava?

A

Reinforces the wall of the vertebral canal posteriorly

Limits flexion

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8
Q

What do the interspinous ligaments connect?

A

Adjacent spinous processes

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9
Q

What does the supraspinous ligament connect?

A

Tips of spinous processes

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10
Q

Where does the supraspinous ligament run from and to?

A

From C7 - Sacrum

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11
Q

What do the intertransverse ligaments connect?

A

Adjacent transverse processes

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12
Q

Describe the difference in fibre types between cervical/ thoracic/ lumbar portions of the intertransverse ligaments

A

Cervical - scattered fibres
Thoracic - fibrous
Lumbar - membranous

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13
Q

Where does the nuchal ligament attach?

A

External occipital protuberance
Posterior border of foramen magnum
Spinous processes C1-C7

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14
Q

With which ligament is the nuchal ligament continuous?

A

Supraspinous

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15
Q

What are the functions of the nuchal ligament?

A

Muscle attachment

Limit flexion

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16
Q

Where does the spinal cord run from and to?

A

From foramen magnum

To L1/L2

17
Q

What are the 2 enlargements of the spinal cord?

A

Cervical (C4-T1)

Lumbar L1-S3

18
Q

How are the spinal nerves named? What is the exception to this rule?

A

CERVICAL - named after the verteba BELOW
Except - C8 because obvs no C8 vertebra

T1-Co1 - named after verteba ABOVE

19
Q

What is the cauda equina?

A

‘Horse’s tail’

Where the lumbar and saral roots extend below the end of the spinal cord

20
Q

What is the filum terminale?

A

Remnant of the caudal part of the spinal cord (anchoring point)

21
Q

What are the 3 layers of spinal meninges?

A

Dura mater
Arachnoid mater
Pia mater

22
Q

What are dural root sheaths?

A

Lateral extensions of dura that cover the nerve roots

23
Q

How is the dura mater attached to the coccyx?

A

By filum terminale

24
Q

What is found in the epidural space?

A

Internal vertebral venous plexuses

Epidural fat

25
Q

What connects the arachnoid mater to the pia mater?

A

Arachnoid trabeculae

26
Q

What is found in the subarachnoid space?

A

CSF

27
Q

What is the lumbar cistern?

A

At L2-S2

Enlarged subarachnoid space around the conus medullaris

28
Q

What structures does the pia mater cover?

A

Spinal cord
Nerve roots
Spinal blood vessels

29
Q

Where do the deniculate ligaments run?

A

Either side of the spinal cord, between the anterior and posterior nerve roots

30
Q

What is the function of the denticulate ligaments?

A

Suspend the cord in the dural sac

31
Q

Describe the arterial supply of the vertebral column

A

Anterior spinal artery
2x posterior spinal arteries
Medullary segmental arteries
Radicular arteries (supply the nerve roots)

32
Q

Describe the venous drainage of the vertebral column

A

3x anterior spinal veins
3x posterior spinal veins
Medullary veins
Radicular veins

33
Q

Where do veins from the vertebral column eventually drain?

A

Into the internal vertebral venous plexuses (in the epidural space)

Anatomy (49 decks)

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