Day 10 & 11 (Vertebral foramen) Flashcards

1
Q

What is the location and number of medullary feeder arteries present in the adult?

A

9 anterior and 12 posterior medullary feeder arteries

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2
Q

What is the name given to the artery which lies in front of the spinal cord along its length?

A

anterior spinal artery

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3
Q

The anterior spinal artery is a branch of which artery?

A

the vertebral artery

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4
Q

Is the anterior spinal artery a single, continuous artery along the spinal cord?

A

no

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5
Q

As the anterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?

A

anterior medullary feeder arteries

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6
Q

The posterior spinal artery is a branch of which artery?

A

the posterior inferior cerebellar artery

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7
Q

What is the position of the posterior spinal artery relative to the spinal cord?

A

it lies in the posterolateral sulcus along the spinal cord

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8
Q

Is the posterior spinal artery a single, continuous artery along the spinal cord?

A

no

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9
Q

As the posterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?

A

posterior medullary feeder arteries

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10
Q

What forms the arterial vasa corona above C3?

A

right and left anterior spinal arteries, right and left posterior spinal arteries, and 4 communicating arteries

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11
Q

What forms the arterial vasa corona below C6?

A

a median anterior spinal artery, right and left posterior spinal arteries, and 3 communicating arteries

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12
Q

What is the generic name given to arteries which penetrate the spinal cord?

A

intramedullary arteries

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13
Q

What are the intramedullary branches of the arterial vasa corona?

A

pial perforating arteries, central/ventral/sulcal perforating arteries

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14
Q

What arterial vasa corona branches supply gray matter and most of the spinal cord?

A

ventral/central/sulcal perforating arteries

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15
Q

What intramedullary branches supply about one third of the spinal cord?

A

pial perforating arteries

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16
Q

What is the source for pial perforating arteries?

A

the pial plexus

17
Q

What is the primary artery supplementing the arterial vasa corona?

A

anterior medullary feeders and posterior medullary feeders

18
Q

What vessels drain the spinal cord?

A

pial veins

19
Q

What will pial veins drain into?

A

venous vasa corona

20
Q

Which vessels form the venous vasa corona?

A

right and left anterior longitudinal veins, right and left posterior longitudinal veins, and 4 communicating veins

21
Q

Which vessels will drain the venous vasa corona?

A

anterior medullary veins, posterior medullary veins

22
Q

What vessel will drain the dorsal/posterior nerve root ganglion?

A

posterior radicular veins

23
Q

What veins are observed in the epidural space near the posterior longitudinal ligament?

A

anterior internal vertebral venous plexus, basivertebral vein

24
Q

What veins are observed in the epidural space near the ligamentum flavum?

A

posterior internal vertebral venous plexus

25
Q

What venous vessels are identified in the intervertebral foramen?

A

intervertebral veins

26
Q

Identify the meninges of the spinal cord (spinal medulla or medula spinalis).

A

dura mater, arachnoid mater pia mater

27
Q

What is the name given to the fluid withing the epidural space?

A

interstitial fluid

28
Q

Which meningeal space is now thought to be a potential space, not an actual space?

A

subdural space- between the dura mater and the arachnoid mater

29
Q

Which of the contents of the epidural space are more likely located near or around the posterior longitudinal ligament?

A

anterior spinal canal artery & plexus
anterior internal vertebral venous plexus
basivertebral vein
recurrent meningeal/sinu-vertebral/sinus vertebral nerve
Hoffman/anterior dural/meningovertebral ligaments

30
Q

What is the name given to the fluid present within the subdural space?

A

serous fluid

31
Q

What is the name given to the fluid with the subarachnoid space?

A

cerebrospinal fluid