GENERAL HISTOLOGY

Detailed explanation-1: -In adults, the cord terminates at the level of L1-L2. Thus the cord spans within 20 bony vertebrae. In a child, it terminates at the upper border of L3. Each of these segments innervates a dermatome.

Detailed explanation-2: -Conus medullaris – The cone-shaped bottom of the spinal cord, usually at the level of L1.

Detailed explanation-3: -For example, lumbar and sacral spinal cord segments are found between vertebral levels T9 and L2, and the spinal cord ends around the L1/L2 vertebral level, forming a structure known as the conus medullaris.

Detailed explanation-4: -The spinal cord terminates in the lumbar spine. The exact point of termination varies among individuals; most commonly, it terminates at the level of the L1 or L2 vertebrae.

Detailed explanation-5: -The vertebral canal is composed of the vertebral foramen located in the cervical, thoracic, and lumbar vertebrae. The vertebral or spinal cord typically ends at the level of the L2 vertebra, where the spinal cord gives off multiple branching spinal nerves and nerve rootlets known as the cauda equina.