Question

external anatomy of the spin
the tapered inferior end of the spinal cord forms what?
denticulate ligaments
filum terminale
cauda equina
conus medullaris

Explanation:

• Denticulate ligaments: These are lateral extensions of the pia mater that anchor the spinal cord to the dura mater. They do not form the tapered inferior end.
• Filum terminale: It is a fibrous strand that extends from the conus medullaris (the tapered end) to the coccyx. It is not the tapered end itself.
• Cauda equina: This is a collection of spinal nerves (from the lumbar, sacral, and coccygeal regions) that resemble a horse’s tail. It is not the tapered end of the spinal cord.
• Conus medullaris: By definition, the conus medullaris is the tapered inferior end of the spinal cord.

Answer:

Conus medullaris