Editing Body cavity (section)

=== Dorsal body cavity ===

The dorsal body cavity contains the [[cranial cavity]], and the [[spinal cavity]].
The cranial cavity is a large, bean-shaped cavity filling most of the upper skull where the brain is located. The spinal cavity is the very narrow, thread-like cavity running from the cranial cavity down the entire length of the [[spinal cord]].

In the dorsal cavity, the cranial cavity houses the [[Human brain|brain]], and the spinal cavity  encloses the spinal cord. Just as the brain and spinal cord make up a continuous, uninterrupted structure, the cranial and spinal cavities that house them are also continuous. The brain and spinal cord are protected by the bones of the skull and vertebral column and by cerebrospinal fluid, a colorless fluid produced by the brain, which cushions the brain and spinal cord within the dorsal body cavity.<ref name="Openstax Anatomy & Physiology " />