Question

the pia mater lining the vertebral cavity extends past the end of the spinal cord (at l1/l2) and continues into the sacrum.

true
false

Explanation:

Analyze the statement

The statement asserts that the pia mater lining the vertebral cavity extends past the end of the spinal cord (at L1/L2) and continues into the sacrum.

Evaluate meningeal extensions

Using the Nervous System Anatomy knowledge point, we recall that the spinal cord ends around the L1 or L2 vertebra. The pia mater continues inferiorly as a thin, fibrous strand called the filum terminale. This strand extends through the vertebral canal, fuses with the dura mater, and anchors to the coccyx (passing through the sacrum). Thus, the pia mater indeed extends past the conus medullaris (end of the spinal cord) into the sacral region.

Determine truth value

Since the pia mater extends past the spinal cord's end at L1/L2 as the filum terminale and continues inferiorly, the statement is true.

Answer:

• True (Correct answer)
• False