Diencephalon

In the human brain, the diencephalon (or interbrain) is a division of the forebrain (embryonic prosencephalon). It is situated between the telencephalon and the midbrain (embryonic mesencephalon). The diencephalon has also been known as the tweenbrain in older literature. It consists of structures that are on either side of the third ventricle, including the thalamus, the hypothalamus, the epithalamus and the subthalamus.

Diencephalon
The hypothalamus and the right and left halves of the thalamus are labeled. The cerebellum is not part of the diencephalon.
Details
PrecursorProsencephalon, derived from the neural tube
Part ofHuman brain
PartsThalamus, the hypothalamus, the epithalamus and the subthalamus
Identifiers
Latindiencephalon
MeSHD004027
NeuroLex IDbirnlex_1503
TA98A14.1.03.007
A14.1.08.001
TA25661
THH3.11.03.5.00001
FMA62001
Anatomical terms of neuroanatomy

The diencephalon is one of the main vesicles of the brain formed during embryogenesis. During the third week of development a neural tube is created from the ectoderm, one of the three primary germ layers. The tube forms three main vesicles during the third week of development: the prosencephalon, the mesencephalon and the rhombencephalon. The prosencephalon gradually divides into the telencephalon (the cerebrum) and the diencephalon.

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