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spinal anatomy > Vertebral Foramen > Flashcards

Vertebral Foramen Flashcards

0
Q

At what level will the spinal cord typically terminate?

A

L1

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1
Q

What typical shape/outline of the vertebral foramen at each region of the spinal column/vertebral column?

A

cervical- triangular; thoracic - oval; lumbar - triangular; sacrum - triangular

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2
Q

At what level will the dural sac typically terminate?

A

S2

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3
Q

What are the segmental arteries of the cervical spine?

A

the vertebral artery, ascending cervical artery and deep cervical artery

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4
Q

What are the segmental arteries of the sacrum?

A

the iliolumbar artery, lateral sacral artery and median (middle) sacral artery

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5
Q

What segmental levels are supplied by the vertebral artery?

A

c1-c6

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6
Q

What segmental levels are supplied by the ascending cervical artery?

A

c1-c6

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7
Q

What segmental level(s) is/are supplied by the subcostal artery?

A

T12

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8
Q

What branch of the segmental artery supplied the vertebra and the paravertebral region?

A

dorsospinal artery

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9
Q

Which artery is primarily observed in the distal part of the intervertebral foramen?

A

spinal artery

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10
Q

which branch of the dorsospinal artery will penetrate the meninges to enter subarachnoid space?

A

spinal artery

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11
Q

What are the branches of the spinal artery?

A

osseous arteries, anterior spial canal artery, posterior spinal canal artery, anterior medullary feeder artery, posterior medullary feeder artery, anterior radicular artery, posterior radicular artery

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12
Q

Which branches of the spinal artery supply the contents of the epidural space?

A

osseous arteries, anterior spinal canal artery, posterior spinal canal artery

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13
Q

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

A

anterior spinal canal artery and plexus

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14
Q

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

A

posterior spinal canal artery and plexus

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15
Q

Which branches of the spinal artery supply the contents of the subarachnoid space?

A

anterior radicular artery, posterior radicular artery, anterior medullary feeder artery, posterior medullary feeder artery

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16
Q

Which vessel will supply the dorsal/posterior rootlets, nerve root and nerve root ganglion?

A

posterior radicular artery

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17
Q

Which vessel will supply the ventral/anterior nerve rootlet and nerve root?

A

anterior radicular artery

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18
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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19
Q

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

A

intramedullary arteries

20
Q

What are the intramedullary branches of the arterial vasa corona?

A

pial perforating arteries, central/ventral/sulcal perforating arteries

21
Q

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

A

pial perforting arteries

22
Q

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

A

ventral/central/sulcal perforating arteries

23
Q

What is the source for pial perforating arteries?

A

the pial plexus

24
Q

What is the primary artery supplementing the arterial vasa corona?

A

anterior medullary feeders and posterior medullar feeders

25
Q

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

A

9 anterior and 12 posterior medullary feeder arteries

26
Q

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

A

anterior spinal artery

27
Q

the anterior spinal artery is a branch of which artery?

A

the vertebral artery

28
Q

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

A

no

29
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

30
Q

The posterior spinal artery is a branch of which artery?

A

the posterior inferior cerebellar artery

31
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

32
Q

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

A

no

33
Q

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

A

posterior medullary feeder arteries

34
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

35
Q

What vessels drain the spinal cord?

A

pail veins

36
Q

What will pial veins drain into?

A

venous vasa corona

37
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

38
Q

which vessels will drain the venous vasa corona?

A

anterior medullary veins, posterior medullary veins

39
Q

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

A

posterior radicular veins?

40
Q

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

A

anterior internal vertebral venous plexus, basivertebral ven

41
Q

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

A

posterior internal vertebral venous plexus

42
Q

what venous vessels are identified int he intervertebral foramen?

A

intervertebral veins

43
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
Hofmann/ anterior dural/miningovertebral ligaments

44
Q

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

A

cerebrospinal fluid

45
Q

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

A

serous flid

46
Q

what is the name given to the lateral extension of pia mater along the spinal cord?

A

dentate (denticulate) ligament

47
Q

What is the unique feature of veins along the spinal canal?

A

they lack the bicuspid valve of typical veins?

spinal anatomy (36 decks)

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