The posterior (dorsal) cavity is composed of which two subdivisions?

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Multiple Choice

The posterior (dorsal) cavity is composed of which two subdivisions?

Explanation:
The posterior (dorsal) cavity is organized into two subdivisions that protect the central nervous system: the cranial cavity, which houses the brain, and the spinal cavity, which surrounds the spinal cord as it runs within the vertebral column. Together, these two spaces make up the dorsal/posterior cavity. Describing it as either a single cranial or spinal cavity, or simply as the posterior cavity itself, misses this division into two parts.

The posterior (dorsal) cavity is organized into two subdivisions that protect the central nervous system: the cranial cavity, which houses the brain, and the spinal cavity, which surrounds the spinal cord as it runs within the vertebral column. Together, these two spaces make up the dorsal/posterior cavity. Describing it as either a single cranial or spinal cavity, or simply as the posterior cavity itself, misses this division into two parts.

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