1. mesencephalon ( midbrain ), cerebellum, pons, and medulla oblongata.2. The mesencephalon modulates painful input before it reaches the level of consciousness. 3. The midbrain or mesencephalon contains the two optic lobes. 4. Premotor cells for fusional vergence are located in the mesencephalon near the oculomotor nucleus. 5. The sulcus limitans extends the length of the spinal cord and through the mesencephalon . 6. The TS is located in the mesencephalon . 7. These swellings represent different components of the central nervous system : the prosencephalon, mesencephalon and rhombencephalon. 8. The midbrain is also known as the Mesencephalon and is one of the three major brain divisions. 9. The periaqueductal gray is the spine and terminate in the PAG, in the mesencephalon or midbrain ). 10. It is not a separate system but a collection of structures from the telencephalon, diencephalon, and mesencephalon .
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