Spinal cord Flashcards

1
Q

Where does the spinal cord begin?

A

When the medulla oblongata exits the foramen magnum

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2
Q

Where does the adult spinal cord terminate?

A

Below the lower border of L1 vertebra

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3
Q

The enlargements of the spinal cord

A

Cervical, lumbar

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4
Q

Inferiorly, the spinal cord tapers of into which structure?

A

Conus medullaris

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5
Q

At the apex of the conus medullaris, the pia mater prolongs into which structure?

A

Filum terminale

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6
Q

Where does the filum terminale attach inferiorly?

A

Coccyx

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7
Q

The longitudinal fissures/furrows of the spinal cord

A

Anterior median fissure, posterior median sulcus, posterolateral sulcus, anterolateral sulcus, posteriorintermediate sulcus

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8
Q

How many spinal nerves attach to the spinal cord

A

31

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9
Q

By which structures do the spinal nerves attach to the spinal cord?

A

Anterior/ ventral/ motor roots

Posterior/ dorsal/sensory roots

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10
Q

The ventral and dorsal roots join to form what structure?

A

Dorsal/posterior root ganglia

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11
Q

The dorsal root ganglia give rise to which structures?

A

Spinal nerves

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12
Q

Which spinal nerves exit above their corresponding vertebra?

A

C1 to C7

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13
Q

Which spinal nerves exit below their corresponding vertebra?

A

Thoracic, lumbar, sacral and coccygeal nerves

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14
Q

Which spinal nerve does not have a corresponding vertebra?

A

C8

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15
Q

Gray matter: inner core or outer covering?

A

Inner core

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16
Q

White matter: inner core or outer covering?

A

Outer covering

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17
Q

The cervical and lumbar enlargements of the spinal cord correspond to the nerve supply of upper and lower extremities, respectively. T/F

A

T

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18
Q

The sulcus and fissure that partially separates the spinal cord into left and right halves

A

Anterior median fissue and posterior median sulcus

19
Q

The less distinct sulci that marks the entrance of dorsal roots into the spinal cord

A

Posterolateral sulci

20
Q

Sulci that marks the exit of ventral roots into the spinal cord

A

Anterolateral sulci

21
Q

Sulci seen only in the cervical and upper thoracic spinal segment between posterior medial and posterolateral sulci

A

Posteriorintermediate sulcus

22
Q

Horns of the gray matter

A

Posterior, anterior and lateral gray horns

23
Q

Somatic sensory nuclei are in which horn?

A

Posterior gray horn

24
Q

Viceral sensory and visceral motor are in which horn?

A

Lateral gray horn

25
Q

Somatic motor are in which horn?

A

Anterior gray horn

26
Q

Gray matter that connects the right and left halves of the spinal cord

A

Gray commissure

27
Q

How many rexed lamina are there?

A

10

28
Q

Lamina X is what part of the gray matter?

A

That surrounding the central canal

29
Q

The anterior horn has which rexed lamina?

A

8 and 9

30
Q

The lateral horn has which rexed lamina?

A

7

31
Q

The posterior horn has which rexed lamina?

A

1 - 6

32
Q

Substantia gelatinosa is on which horn?

A

Posterior horn

33
Q

Rexed lamina surrounding central canal

A

X

34
Q

Lamina I-VI is on which horn?

A

Posterior horn

35
Q

Lamina VII is on which horn?

A

Lateral

36
Q

Lamina VIII and IX are on which horn?

A

Anterior horn

37
Q

Substantia gelatinosa is on which rexed lamina?

A

II

38
Q

When a lumbar puncture is performed, you insert the spinal needle in this space

a. epidural space
b. subarachnoid space
c. Subpial space
d. A and B

A

B

39
Q

True about the spinal cord

a. there are 8 pairs of spinal nerves in the cervical cord
b. the dorsal column is made up of gracilis and cuneatus column in the level of the lumbar cord
C. the intermediolateral column is seen in the lumbar spinal cord
d. a and b only

A

A

40
Q

Connects conus medullaris to coccyx

A. Cauda equina
B. Filium terminale

A

B

41
Q

What rexed lamina contains interneuron that transmits information coming from the pain and temperature afferents?

A. IX
B. X
C. II
D. VIII
E. VII
A

C

42
Q

The conus medullaris is found at this level:

A. S2-S4
B. L1-L4
C. S1-S3
D. L2-L4

A

A

43
Q

How many pairs of spinal nerves are there?

A. 30
B. 31
C. 32
D. 33

A

B