midbrain
Acronym: MBR
The term midbrain (MBR) refers to one of five linearly organized components of the brain (BRN) as defined and segmented by dissection. The other components rostral to MBR are the endbrain (EBR) and interbrain (IBR); those caudal to it are the pons (PON) and medulla (MDL). Central of the five, the MBR's rostral boundary with the IBR passes the rostral margin of the superior colliculus (SUC) dorsally and the caudal margin of the mammillary body (mmb) of the hypothalamus (HYP) ventrally. Caudally, its boundary with PON is a similar plane that passes the caudal margin of the inferior colliculus dorsally and the rostral margin of the basal pons (PONb) ventrally.
      The midbrain is composed of two parts: the tectum (TEC) and the cerebral peduncle. Substructures of the midbrain are derived for the most part, but not entirely, from the embryonic Mesencephalon.

Also known as: MesencephalonNeuroNames ID : 462


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