Spinal Cord Cross Section

The white matter consists of myelinated fibres or axons that form nerve tracts ascending to and descending from the brain.
Spinal cord cross section. The spinal cord in cross section has a central region of darkergray matterand the rest is lighter white matter. Key areas of a cross section of the spinal cord include. 12 thoracic segments forming 12 pairs of thoracic nerves 5 lumbar segments forming 5 pairs of lumbar nerves 5 sacral.
8 cervical segments forming 8 pairs of cervical nerves c1 spinal nerves exit the spinal column between the foramen. Cervical or neck thoracic or chest lumbar or abdomen sacral or pelvis coccygeal or tailbone. The white matter is made up of neuron axons mostly but not all myelinated.
There are 31 spinal cord nerve segments in a human spinal cord. The white matter is grouped into discrete sectors called funiculi. A cross section of the spinal cord reveals white matter arranged around a butterfly shaped area of gray matter.
The white matter surrounds the gray matter in the spinal cord and contains cells coated in myelin which. The gray matter is made up of neuroglia cells and neuron cell bodies.