A 3D medical animation still shot showing different parts of the midbrain. The brainstem (or brain stem) is the stalk-like part of the brain that connects the forebrain (the cerebrum and diencephalon) with the spinal cord.[1] In the human brain, the brainstem is composed of the midbrain, the pons, and the medulla oblongata.[1][2] The midbrain is continuous with the thalamus of the diencephalon thr
![Brainstem - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/da269d1a339a74ee176fdd238a1c588a36ba10fa/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F6%2F69%2F1311_Brain_Stem.jpg)