Which of the following terms describes the cavities inside the skull?

The term that accurately describes the cavities inside the skull is the anterior, middle, and posterior fossa. These areas are anatomical divisions of the cranial cavity that house different parts of the brain. The anterior fossa is primarily occupied by the frontal lobes, the middle fossa contains the temporal lobes and parts of the brainstem, while the posterior fossa houses the cerebellum and the brainstem. Understanding these fossa is crucial as they also provide essential landmarks for surgeries and the understanding of potential pathological conditions.

The other options do not correctly refer to the anatomical spaces within the skull. Meninges are protective layers surrounding the brain and spinal cord rather than cavities, cranial osmosis does not describe any recognized anatomical feature, and cerebellar recesses do not constitute a primary classification of skull cavities like the fossa does.