What Structure Anchors the Thecal Sac and Conus Medullaris to the Coccyx

Question

What structure anchors the thecal sac and conus medullaris to the coccyx?
A) filum terminale
B) denticulate ligaments
C) pia mater
D) cauda equina

Accepted Answer

The filum terminale is a thin strand of fibrous tissue that extends inferiorly from the conus medullaris to anchor the thecal sac and conus medullaris to the coccyx.