Sheep Hindbrain — Median View

The cerebellar vermis is sectioned sagittally in this median view of a sheep hindbrain. The vemis is divisible into about ten lobules; the most caudal lobule is the nodulus. Ventral to the cerebellum, the fourth ventricle is roofed by rostral and caudal medullary vellum. The latter gives rise to bilateral choroid plexuses.