The cerebellum has two hemispheres (left and right). They are connected by a midline mass called the vermis.
The unpaired, middle region of the cerebellum that links the two hemispheres is known as the vermis. The lobules that make up the vermis and hemispheres are created by collections of folia. The anterior, posterior, and flocculonodular lobes of the vermis are similarly three in number. The lingula, central lobule, culmen, clivus, folium of the vermis, tuber, pyramid, uvula, and nodule are among the vermis' nine lobules.
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