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Mesencephalon

More information in Books or onNLM PubMed
Definition: The middle of the three primitive cerebral vesicles of the embryonic brain. Without further subdivision, midbrain develops into a short, constricted portion connecting the PONS and the DIENCEPHALON. Midbrain contains two major parts, the dorsal TECTUM MESENCEPHALI and the ventral TEGMENTUM MESENCEPHALI, housing components of auditory, visual, and other sensorimoter systems.     
Examples Locus Coeruleus; Raphe Nuclei; Tectum Mesencephali; Tegmentum Mesencephali 		Other names Midbrain; Midbrains; Mesencephalons

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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