Sagittal Section of the Skull and Spine

Description

Presented as a midsagittal section, the cranium is opened through the calvaria to expose the cerebral hemispheres superiorly, the cerebellum in the posterior cranial fossa, and the brainstem continuous with the spinal cord at the level of the foramen magnum. Inferior to the cranial base, the vertebral canal descends within the vertebral column, framed by the vertebral bodies anteriorly and the vertebral arches posteriorly. Cervical, thoracic, lumbar, sacral, and coccygeal segments are distinguishable along the midline, with intervertebral discs separating adjacent vertebrae and helping define the spinal curvatures. Nerve roots are suggested exiting laterally from the cord at segmental levels. Clear midline anatomy. This sagittal cut matters because it links intracranial and intraspinal spaces in a single continuity, a relationship that underpins both neuroanatomy teaching and clinical reasoning. The foramen magnum region is a key landmark when discussing hindbrain herniation and cervicomedullary compression, and the caliber of the vertebral canal provides a visual framework for understanding central canal stenosis across cervical and lumbar levels. Alignment is also readable here, which supports discussions of kyphosis, lordosis, and how degenerative disc height loss can alter sagittal balance. Use this illustration for neuroanatomy and gross anatomy courses when introducing the central nervous system axis, or for radiology and neurosurgery materials that correlate sagittal MRI with osseous landmarks of the cranium and vertebral column. It also suits patient-facing spine education where a medial section clarifies why cord and brainstem symptoms can coexist. Anatomical accuracy verified by SciePro's Medical Advisory Board.