Term Name: midbrain
Synonyms: MB, mesencephalon
Definition: The midbrain is the middle division of the three primary divisions of the developing chordate brain or the corresponding part of the adult brain (in vertebrates, includes a ventral part containing the cerebral peduncles and a dorsal tectum containing the corpora quadrigemina and that surrounds the aqueduct of Sylvius connecting the third and fourth ventricles)[GO].
Ontology: Cell Ontology [UBERON:0001891]

Relationships
has parts: alar plate midbrain anterior tegmental nucleus central gray substance of midbrain cerebral crus early midbrain vesicle floor plate of midbrain gray matter of midbrain habenulo-interpeduncular tract of midbrain medial longitudinal fasciculus of midbrain meninx of midbrain midbrain arachnoid mater midbrain cerebral aqueduct midbrain dopaminergic neuron midbrain dura mater midbrain lateral wall midbrain nucleus midbrain pia mater midbrain subarachnoid space midbrain tectum midbrain tegmentum roof plate of midbrain substantia nigra white matter of midbrain
is a type of: regional part of brain structure with developmental contribution from neural crest
has subtype: ventro-caudal cluster
immediate_transformation_of: presumptive midbrain