Neuroanatomy: Spinal cord

Question 1

The tapered inferior end of the spinal cord.

Answer 1

Conus medullaris

Question 2

A slender thread prolonged from the tip of the
conus medullaris downward as far as the coccyx.

Answer 2

Filum terminale

Question 3

A bundle of spinal nerves (lumbar, sacral,
coccygeal), extending inferiorly from the
lumbosacral enlargement and the conus medullaris of the spinal cord.

Answer 3

Cauda equina

Question 4

The spinal cord is incompletely divided into two
equal parts, anteriorly by a short, shallow _______
& posteriorly by a deep narrow septum, viz.
_______

Answer 4

• Anterior median fissure
• Posterior median sulcus

Question 5

Connections between left & right halves of the
spinal cord.

Answer 5

Commissures

Question 6

The white color of white matter is due to high
proportion of _______ nerve fibers.

Answer 6

Myelinated

Question 7

A group of nerve fibers(axons) that share a
common origin, termination & function form a
_______.

Answer 7

Tract/ Fasciculus

Question 8

A cerebrospinal-filled space that runs longitudinally through the entire length of the spinal cord.

Answer 8

Central canal

Question 9

An area of skin in which sensory nerves derive
from a single spinal nerve root.

Answer 9

Dermatome

Question 10

A potential cavity between the dura and arachnoid
mater.

Answer 10

Subdural space
NB: For dura venous sinus and pathway of CSF