midbrain

midbrain
noun Date: 1864 the middle of the three primary divisions of the developing vertebrate brain or the corresponding part of the adult brain between the forebrain and hindbrain that includes the tectum, tegmentum, and substantia nigra — called also mesencephalon — see brain illustration

New Collegiate Dictionary. 2001.

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  • Midbrain — Mid brain , n. [Mid, a. + brain.] (Anat.) The middle segment of the brain; the mesencephalon. See {Brain}. [1913 Webster] …   The Collaborative International Dictionary of English

  • midbrain — [mid′brān΄] 1. the middle part of the three primary divisions of the brain of a vertebrate embryo 2. the part of the fully developed brain evolved from this; mesencephalon …   English World dictionary

  • Midbrain — Brain: Mesencephalon Inferior view mesencephalon (2), above (3) …   Wikipedia

  • Midbrain tegmentum — Brain: Midbrain tegmentum Transverse section of mid brain at level of superior colliculi. ( Tegmentum visible center right.) …   Wikipedia

  • Midbrain tectum — Brain: Midbrain tectum Deep dissection of brain stem. Lateral view. Latin t. mesencephali Part of Midbrain NeuroNames …   Wikipedia

  • Midbrain reticular formation — Brain: Midbrain reticular formation Latin formatio reticularis mesencephali The midbrain reticular formation (mesencephalic reticular formation, tegmental reticular formation, formatio reticularis (tegmenti) mesencephali) is a structure in the… …   Wikipedia

  • Midbrain aqueduct — A canal that communicates between the third and fourth ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles …   Medical dictionary

  • midbrain — /mid brayn /, n. Anat. the middle of the three primary divisions of the brain in the embryo of a vertebrate or the part of the adult brain derived from this tissue; mesencephalon. [1870 75; MID + BRAIN] * * * …   Universalium

  • midbrain — noun A part of the brain located rostral to the pons and caudal to the thalamus and the basal ganglia, composed of the tectum (dorsal portion) and the tegmentum (ventral portion). Syn: mesencephalon …   Wiktionary

  • midbrain — mesencephalon. * * * mid·brain mid .brān n the middle division of the three primary divisions of the developing vertebrate brain or the corresponding part of the adult brain that includes a ventral part containing the cerebral peduncles and a… …   Medical dictionary

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