Cross-section of the abdomen at L2 to reveal relationships of various internal organs including liver, kidneys, and spinal column.

Anterior and cross-sectional view of the spinal cord with its surrounding arterial blood supply.

Cross-sections of spinal cord at C1, C5, T2, T10, L4 and S4 vertebral levels.

Cross-sections of the brain, midbrain, pons, medulla, cervical spinal cord and thoracic spinal cord showing the afferent sensory tracts (without labels).

Cross-sections of the brain, midbrain, pons, medulla, cervical spinal cord and thoracic spinal cord showing the afferent sensory tracts.

Cross-section of placenta to reveal the circulatory anatomy; proximal end of umbilical cord is seen at top.

Sagittal section of termination of spinal cord, in situ; image also shows conus medullaris, filum terminale, and subarachnoid space.

Deep muscles of the back: erector spinae and semispinalis capitis in a schematic transverse section at the thoracic level.

Sagittal section of spinal cord in adult showing the spinal nerves, vertebral bodies, and cervical (pink), thoracic (orange), lumbar (yellow), sacral (brown), and coccygeal (green) segments, as well as the cauda equina and filum terminale.

Sagittal section of lumbar area of spinal column showing pertinent anatomy. Left: needle inserted into epidural space between L3 and L4 vertebrae. Right: Needle is removed leaving catheter in place.

Transverse sections of the cervical (top), thoracic (2nd), lumbar (3rd), and sacral (4th) portions of the spinal cord. (DF, dorsal funiculus; LF, lateral funiculus; VF, ventral funiculus).

Spinal cord, cross section