Where does the spinal cord begin?
When the medulla oblongata exits the foramen magnum
Where does the adult spinal cord terminate?
Below the lower border of L1 vertebra
The enlargements of the spinal cord
Cervical, lumbar
Inferiorly, the spinal cord tapers of into which structure?
Conus medullaris
At the apex of the conus medullaris, the pia mater prolongs into which structure?
Filum terminale
Where does the filum terminale attach inferiorly?
Coccyx
The longitudinal fissures/furrows of the spinal cord
Anterior median fissure, posterior median sulcus, posterolateral sulcus, anterolateral sulcus, posteriorintermediate sulcus
How many spinal nerves attach to the spinal cord
31
By which structures do the spinal nerves attach to the spinal cord?
Anterior/ ventral/ motor roots
Posterior/ dorsal/sensory roots
The ventral and dorsal roots join to form what structure?
Dorsal/posterior root ganglia
The dorsal root ganglia give rise to which structures?
Spinal nerves
Which spinal nerves exit above their corresponding vertebra?
C1 to C7
Which spinal nerves exit below their corresponding vertebra?
Thoracic, lumbar, sacral and coccygeal nerves
Which spinal nerve does not have a corresponding vertebra?
C8
Gray matter: inner core or outer covering?
Inner core
White matter: inner core or outer covering?
Outer covering
The cervical and lumbar enlargements of the spinal cord correspond to the nerve supply of upper and lower extremities, respectively. T/F
T
The sulcus and fissure that partially separates the spinal cord into left and right halves
Anterior median fissue and posterior median sulcus
The less distinct sulci that marks the entrance of dorsal roots into the spinal cord
Posterolateral sulci
Sulci that marks the exit of ventral roots into the spinal cord
Anterolateral sulci
Sulci seen only in the cervical and upper thoracic spinal segment between posterior medial and posterolateral sulci
Posteriorintermediate sulcus
Horns of the gray matter
Posterior, anterior and lateral gray horns
Somatic sensory nuclei are in which horn?
Posterior gray horn
Viceral sensory and visceral motor are in which horn?
Lateral gray horn
Somatic motor are in which horn?
Anterior gray horn
Gray matter that connects the right and left halves of the spinal cord
Gray commissure
How many rexed lamina are there?
10
Lamina X is what part of the gray matter?
That surrounding the central canal
The anterior horn has which rexed lamina?
8 and 9
The lateral horn has which rexed lamina?
7
The posterior horn has which rexed lamina?
1 - 6
Substantia gelatinosa is on which horn?
Posterior horn
Rexed lamina surrounding central canal
X
Lamina I-VI is on which horn?
Posterior horn
Lamina VII is on which horn?
Lateral
Lamina VIII and IX are on which horn?
Anterior horn
Substantia gelatinosa is on which rexed lamina?
II
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
B
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
Connects conus medullaris to coccyx
A. Cauda equina
B. Filium terminale
B
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
C
The conus medullaris is found at this level:
A. S2-S4
B. L1-L4
C. S1-S3
D. L2-L4
A
How many pairs of spinal nerves are there?
A. 30
B. 31
C. 32
D. 33
B