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Neuro > Spinal cord > Flashcards

Spinal cord Flashcards

1
Q

How many cervical vertebrae are there?

A

7

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2
Q

How many thoracic vertebrae are there?

A

12

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3
Q

How many lumbar vertebrae are there?

A

5

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4
Q

How many fused sacral vertebrae are there?

A

5

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5
Q

How many fused vertebrae is the coccyx formed from?

A

4

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6
Q

Describe the curvatures of the spine

A

cervical curvature
thoracic curvature
lumbar curvature
pelvic curvature

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7
Q

What are the two parts of a vertebral disc?

A

the nucleus pulposus

the annulus fibrosus

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8
Q

What is the annulus fibrosus attatched to?

A

the vertebral bodies

the posterior longitudinal ligament

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9
Q

At what vertebral level does the spinal cord taper off to form the conus medullaris?

A

L2`

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10
Q

At what vertebral level does the spinal cord terminate?

A

L2

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11
Q

In the distal part of the spinal canal, the meninges form a strand of fibrous tissue. What is this tissue called?

A

filum terminale

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12
Q

In the spinal canal, what separates the dura mater from the walls of the vertebral canal?

A

epidural space

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13
Q

Distal to the conus medullaris, the subarachnoid space expands to form the lumbar cistern. What is the clinical significance of the lumbar cistern?

A

The area accessed in a lumbar puncture

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14
Q

The cauda equina is a bundle of nerves formed from which nerve roots?

A

L2-S5

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15
Q

What is the name given to the bundle of nerves with nerve roots L2-S5?

A

cauda equina

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16
Q

Is the anterior nerve root motor or sensory?

A

motor

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17
Q

Is the posterior nerve root sensory or motor?

A

sensory

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18
Q

Spinal nerves leave the vertebral canal via which foramina?

A

the intervertebral foramina

19
Q

After a spinal nerve exits the vertebral canal, what does it split into?

A

Anterior and posterior rami

20
Q

What is the difference between anterior and posterior rami?

A

anterior rami- supplies fibres to parts of the body the posterior rami does not
posterior rami- nerve fibres to the synovial joints of the vertebral column, deep muscles of the back and overlying skin

21
Q

Describe the arterial supply to the spinal cord

A

Anterior spinal artery

Two posterior spinal arteries

22
Q

What two sections can we split the vertebrae into?

A

anterior vertebral body

posterior vertebral arch

23
Q

What is the weight bearing part of the vertebrae?

A

the vertebral body

24
Q

What are the superior and inferior aspects of the vertebral body lined by?

A

hyaline cartilage

25
Q

What process is found posteriorly at the point of the vertebral arch?

A

spinous process

26
Q

How many spinous processes does each verteba have?

A

1

27
Q

How many transverse processes does each vertebra have?

A

2

28
Q

What do the transverse processes articulate with in the thoracic vertebrae?

A

the ribs

29
Q

What do the peduncles connect?

A

the vertebral body to the transverse processes

30
Q

What do the lamina connect?

A

the transverse and spinous processes

31
Q

Where are articular processes located in the vertebra?

A

At the intersection of the pedicle and the lamina

32
Q

Which processes form joints between a vertabra and its superior and inferior vertebrae?

A

articular processes

33
Q

What are the distinguishing features of the cervical vertebrae?

A 
Bifid spinous processes (except C1 and C7)
Transverse foramina (through which the vertebral arteries travel to the brain)
Triangular vertebral foramnen
34
Q

What shape is the vertebral foramen of the thoracic vertebrae ?

A

circular

35
Q

What facets do throracic vertebrae have that articulate with the heads of two different ribs and are superiorly and inferiorly placed on the sides of the vertebral body?

A

demi facets

36
Q

What special facet is found on the transverse processes of the thoracic vertebrae?

A

costal facets

37
Q

What shape is the vertebral foramen of a lumbar vertebra?

A

triangular

38
Q

What are the joints between articular facets called?

A

facet joints

39
Q

Which ligament extends between the lamina of adjacent vertebrae?

A

the ligamentum flavum

40
Q

What do interspinous ligaments join?

A

spinous processes of adjacent vertebrae

41
Q

What does the supraspinous ligament join?

A

the tips of the spinous processes of adjacent vertebrae

42
Q

Which ligament extends between transverse processes?

A

intertransverse ligaments

43
Q

What does the dorsal root of the spinal nerve carry?

A

sensory fibres

44
Q

What does the ventral root carry?

A

motor fibres

Neuro (7 decks)

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