Inferior cerebellum with brain stem

The inferior surface of the cerebellum, with the brainstem attached, showcases the intricate neuroanatomical relationships within the posterior cranial fossa. In this view, major structures such as the cerebellar tonsils, the uvula and the pyramid of the vermis are visible. Crucially, the attachment points of the superior, middle, and inferior cerebellar peduncles can be observed as they connect the cerebellum to the midbrain, pons and medulla oblongata, respectively. The fourth ventricle lies anterior to the cerebellum and posterior to the pons and medulla, and its lateral recesses are often clearly identifiable in this dissection. The anatomical importance of this arrangement is primarily the spatial proximity of the cerebellar tonsils to the foramen magnum and the direct relation to the vital centers of the medulla (which control heart rate and respiration).