Cerebellum in a Section of the Skull

Description

Sagittal section through an adult male skull exposes the posterior cranial fossa and the cerebellum (blue) seated inferior to the occipital lobes of the cerebrum (pink). Parallel cerebellar folia define the hemispheres laterally and the vermis in the midline, with a clear distinction between the superior and inferior cerebellar surfaces. Anterior to the cerebellum, the brainstem (tan) aligns vertically as midbrain, pons, and medulla oblongata, continuing inferiorly toward the foramen magnum and cervical canal. Surrounding bone includes the calvaria and skull base, with the maxilla, mandible, and teeth retained to orient the section in the viscerocranium. For teaching hindbrain anatomy, this cut clarifies how the metencephalon (pons and cerebellum) occupies the infratentorial compartment and relates to the clivus and occipital bone. That relationship matters in posterior fossa surgery and in imaging interpretation when mass effect from a cerebellar hemisphere lesion or vermian tumor compresses the fourth ventricle and brainstem, producing obstructive hydrocephalus. It also supports practical localization: truncal ataxia from vermis involvement versus limb ataxia from hemispheric pathology. A tight space. Use this illustration in neuroanatomy and head and neck anatomy courses to connect cerebellar morphology to skull landmarks, and in neurosurgical or neuroradiology publications discussing midline sagittal anatomy, posterior fossa approaches, or Chiari-related crowding at the foramen magnum. Anatomical accuracy verified by SciePro's Medical Advisory Board.