Download The Anatomy of the Sheep Brain

The Anatomy of the Sheep Brain
Anatomically, the human brain shares many basic structures and brain areas
with the brains of other animals. For example, in the sheep brain (see Image
below), one observes a cerebrum, a brain stem, cerebellum, medulla oblongata
and glands, such as the pineal gland and the pituitary gland.
Like the human brain it's surface is also thrown into many convolusions, called
gyri and fissures. In variation to the human brain, however, the sheep brain
possesses a rather large olfactory bulb, a pronounced optic nerve (CN II) and a
large optic chiasma. Cerebral peduncles are found on the ventral aspect of the
midbrain, posterior to the single mammilary body. The same number of cranial
nerves as observed in the human brain, which is 12, emerge from the base of the
sheep brain. Internally, the sheep brain reveals a thalamus, a corpus callosum,
four ventricles, i.e. 2 lateral, one third and one fourth ventricle, a hypothalamus,
a pineal gland, the corpora quadrigemina of the midbrain, the pineal gland, the
pons and the medulla oblongata.
The inner anatomy of a sheep brain