In this dissection, we examined a sheep brain and how it's functions are quite similar to that of a human brain. We first started the dissection by tearing out some meninges from the brain, a protective, shiny membrane that protects the brain. This is where the term meningitis originates from, as the disease is diagnosed when the meninges are infected or inflamed. We then cut the brain in half through the corpus callosum, a bundle of fibers that connect the two hemispheres together, to observe the left and right hemispheres. We discovered parts of the brain such as the thalamus and the midbrain, along with other main parts of the deep brain that maintain homeostasis and control our hormones. We then cut the brain again horizontally to examine the gray and white matter deep inside the brain. We have learned of white matter before, as it protects the brain from cognitive diseases such as Alzheimers, and to preserve such matter, we need to exercise daily.
A picture of the brain with pins describing each part. The white pin represents the anterior side while the black pin represents the posterior side. The red pin represents the brain stem while the green pin represents the cerebellum. Lastly, the yellow pin represents the cerebrum of the brain.
The brain dissected vertically. The lower left pin represents the optic nerve while the other white pin represents the hypothalamus. The green pin represents the medulla oblongata while the blue pin represents the pons. The black pin represents the thalamus while the red pin represents the corpus callosum. Lastly, the yellow pin represents the whole midbrain.
Observing grey and white matter. You can see grey matter at the outer ridges while white matter fills in the inner portion of the brain.
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