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How does the human skeleton protect the brain and spinal cord?

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Front and back views of the human skeleton are shown side by side, with labeled bones including the skull, spine, ribs, pelvis, arms, legs, hands, and feet. Insets detail the bones of the foot and hand, highlighting major bone groups and anatomical terms. — human skeleton Front and back views of the human skeleton.

The human skeleton provides essential protection for the central nervous system through specialized bony structures that enclose these delicate tissues.

Protection of the Brain

The brain is housed within the cranium, a boxlike structure composed of several large bones, including the frontal bone, parietal bones, temporal bones, sphenoid, and occipital bone. This rigid, globular framework shields the brain from external impact. Additional physiological protection is provided by the meninges and cerebrospinal fluid, which cushion the brain within the cranial cavity.123

Protection of the Spinal Cord

The spinal cord is protected by the vertebral column, which forms a continuous spinal canal (or vertebral canal) running through the center of the vertebrae. The spinal cord enters this canal through the foramen magnum, a central opening located at the base of the occipital bone. This bony arrangement ensures the spinal cord remains shielded while allowing for the structural flexibility required for movement.143