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Definition

noun

In translation, a terminal thread, i.e. a long strand of connective tissue extending from the apex of the medullary cone to the coccyx, providing longitudinal support to the spinal cord

Supplement

Filum terminale is comprised of two parts:

• filum terminal internum, longer, slender, pial portion that is ~15 cm in length
• filum terminale externum, shorter, stouter, dural portion that is ~5cm in length, also called the coccygeal ligament

Synonym(s):

• terminal thread
• nervus impar