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Spinal Anatomy Fall 2015 > Exam I Vertebral Foramen > Flashcards

Exam I Vertebral Foramen Flashcards

1
Q

at what vertebral level will the spinal cord typically terminate

A

L1

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2
Q

at what vertebral level will the dural sac typically terminate

A

S2

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3
Q

what are segmental arteries

A

the arteries whose branches supply the vertebra or segment

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4
Q

identify all segmental arteries

A

vertebral, ascending cervical, deep cervical, superior (highest) intercostal, posterior intercostal, subcostal, lumbar, iliolumbar, lateral sacral and median (middle) sacral

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5
Q

what is the 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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6
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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7
Q

what are the segmental arteries of the thoracic spine

A

the deep cervical artery, superior (highest) intercostal artery, posterior intercostal artery and subcostal artery

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8
Q

what are the segmental arteries of the lumbar spine

A

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

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9
Q

what segmental levels are supplied by the vertebral artery

A

C1-C6

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10
Q

what segmental levels are supplied by the ascending cervical artery

A

C1-C6

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11
Q

what segmental levels are supplied by the deep cervical artery

A

C7-T1

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12
Q

what segmental levels are supplied by the superior (highest) intercostal artery

A

T1,T2

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13
Q

what segmental levels are supplied by the posterior intercostal artery

A

T3-T11

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14
Q

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

A

T12

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15
Q

what segmental levels are supplied by the lumbar arteries

A

L1-L4

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16
Q

what segmental levels are supplied by the median (middle) sacral artery

A

L5, S1-S5 and coccyx

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17
Q

what segmental levels are supplied by the iliolumbar artery

A

L5, S1-S5 and coccyx

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18
Q

what 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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19
Q

what arteries are observed in the epidural space near the PLL

A

anterior spinal canal artery and plexus

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20
Q

what arteries are observed in the epidural space near the ligamentum flavum

A

posterior spinal canal arteries and plexus

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21
Q

which branches of the spinal canal 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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22
Q

which vessels will supply the ventral/anterior nerve rootlet and nerve root

A

anterior radicular artery

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23
Q

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

A

posterior radicular artery

24
Q

what is the name given to the artery that lies in front of the spinal cord along its length

A

anterior spinal canal artery

25
Q

the anterior spinal artery is a branch of which artery

A

the vertebral artery

26
Q

is the anterior spinal artery single, continuous artery along the spinal cord

A

no

27
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

28
Q

the posterior spinal artery is a branch of which artery

A

the posterior inferior cerebellar artery

29
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

30
Q

is the posterior spinal artery a single, continuous artery along the cord

A

no

31
Q

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

A

posterior medullary feeder arteries

32
Q

what changes to the arterial vasa corona occur between C3 and C6

A

right an left anterior spinal arteries fuse to become a single median anterior spinal artery, the right and left posterior spinal arteries are unchanged, and the 4 communicating arteries are reduced to 3 communicating arteries

33
Q

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

A

ventral/central/sulcul perforating arteries

34
Q

what intramedullary branches supply about 1/3 of the spinal cord

A

pial perforating arteries

35
Q

what is the primary artery supplementing the arterial vasa corona

A

anterior medullary feeders and posterior medullary feeders

36
Q

what vessels drain the spinal cord

A

pial veins

37
Q

which vessels will drain the venous vasa corona

A

anterior medullary veins, posterior medullary veins

38
Q

which vessels will drain the ventral/anterior nerve roots

A

anterior radicular veins

39
Q

which vessels will drain the dorsal/posterior nerve roots

A

posterior radicular veins

40
Q

what vessel will drain the dorsal/posterior nerve root ganglion

A

posterior radicular veins

41
Q

what veins will lie in the subarachnoid space

A

pial veins, venous vasa corona, anterior longitudinal veins, posterior longitudinal veins, communicating veins, anterior medullary veins, posterior medullary veins, anterior radicular veins, posterior radicular veins

42
Q

what veins are observed in the epidural space near the PLL

A

anterior internal vertebral venous plexus, basivertebral vein

43
Q

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

A

posterior internal vertebral venous plexus

44
Q

what venous vessels are identified in the intervertebral foramen

A

interverterbal veins

45
Q

identify the meninges of the spinal cord and the commonly accepted meaning of each

A

dura mater- tough mother, arachnoid mater- spider mother, pia mater- delicate or tender mother

46
Q

name and locate each space formed between osseous vertebral foramen and the spinal cord

A

epidural space- between the vertebral foramen and the dura mater
subdural space- between the dura mater and the arachnoid mater
subarachnoid space- between the arachnoid mater and the pia mater

47
Q

what is the name given to the fluid within the epidural space

A

interstitial fluid

48
Q

what are the contents of the epidural space

A

anterior and posterior spinal canal artery and plexus
anterior and posterior internal vertebral venous plexus
basivertebral vein
recurrent meningeal/sinu-vertebral/sinus verterbal nerve
hofmann/anterior dural/meningovertebral ligaments
ligamentum flavum
posterior longitudinal ligament

49
Q

which the contents of the epidural space will be found near the vertebral body

A

anterior spinal canal arteries and plexus
anterior internal vertebral venous plexus
basivertebral vein
recurrent meningeal, sinus vertebral nerve
PLL
hofmann ligaments

50
Q

which of the contents of the epidural space are more likely located near or around the PLL

A 
anterior spinal canal artery and plexus 
anterior internal vertebral venous plexus 
basivertebral vein 
recurrent meningeal vertebral nerve 
hofmann ligaments
51
Q

which of the contents of the epidural space will be found near the lamina

A

posterior spinal canal artery and plexus
posterior internal vertebral venous plexus
ligmanetum flavum

52
Q

what is the name given to the fluid within the subarachnoid space

A

cerebrospinal fluid

53
Q

what contents of the subarachnoid space are changed below the level of C6

A

the arterial vasa corona consists of 1 anterior spinal artery, 2 posterior spinal arteries and 3 communicating arteries

54
Q

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

A

dentate (denticulate) ligament

55
Q

what is the unique feature of veins along the spinal canal

A

they lack the bicuspid valve of typical veins

Spinal Anatomy Fall 2015 (29 decks)

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