diencephalon

(redirected from Diencephalons)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to Diencephalons: prosencephalon

diencephalon

 [di″en-sef´ah-lon]
1. the posterior part of the prosencephalon, consisting of the hypothalamus, thalamus, metathalamus, and epithalamus; the subthalamus is often considered to be a distinct division. See also brainstem.
2. the posterior of the two brain vesicles formed by specialization of the prosencephalon in the developing embryo. See illustration.
Diencephalon. Posterior (dorsal) A and anterior (inferior) B views of the base of the brain, showing the diencephalon in relation to the mesencephalon (midbrain) and rhombencephalon (hindbrain). From Dorland's, 2000.

di·en·ceph·a·lon

, pl.

di·en·ceph·a·la

(dī'en-sef'ă-lon, -sef'ă-lă), [TA]
The caudal part of the prosencephalon composed of the dorsal thalamus (or thalamus) epithalamus, subthalamus, and hypothalamus. the geniculate bodies, sometimes referred to as the metathalamus, are actualy part of the thalamus.
[G. dia, through, + enkephalos, brain]

diencephalon

/di·en·ceph·a·lon/ (di″en-sef´ah-lon)
1. the posterior part of the forebrain, consisting of the hypothalamus, thalamus, metathalamus, and epithalamus; the subthalamus is often recognized as a distinct division.
Enlarge picture
Diencephalon. Posterior (dorsal) (A) and anterior (inferior) (B) views of the base of the brain, showing the diencephalon in relation to the mesencephalon (midbrain) and rhombencephalon (hindbrain).
2. the posterior of the two brain vesicles formed by specialization in embryonic development. See also brain stem. diencephal´ic

diencephalon

(dī′ĕn-sĕf′ə-lŏn′, -lən)
n.
The posterior part of the forebrain that connects the midbrain with the cerebral hemispheres, encloses the third ventricle, and contains the thalamus and hypothalamus. Also called betweenbrain, interbrain.

di·en·ce·phal′ic (-sə-făl′ĭk) adj.

diencephalon

[dī′ənsef′əlon]
Etymology: Gk, di + enkephalon, brain
the portion of the brain between the cerebrum and the mesencephalon. It consists of the hypothalamus, thalamus, metathalamus, and the epithalamus and includes most of the third ventricle.
enlarge picture
Diencephalon

di·en·ceph·a·lon

, pl. diencephala (dī'en-sef'ă-lon, -lă) [TA]
That part of the prosencephalon composed of the epithalamus, dorsal thalamus, subthalamus, and hypothalamus.
[G. dia, through, + enkephalos, brain]

diencephalon

The central, lower part of the brain that contains the BASAL GANGLIA, THE THALAMUS, the HYPOTHALAMUS, the PITUITARY gland.

diencephalon

the part of the forebrain that contains the thalamus and hypothalamus and lies beneath the cerebral hemispheres.

Diencephalon

A part of the brain that binds the mesencephalon to the cerebral hemispheres. Considered by some as part of the brain stem.
Mentioned in: Korsakoff's Syndrome

diencephalon

collective term denoting thalamus, subthalamus and hypothalamus

diencephalon

1. the caudal part of the forebrain, consisting of the hypothalamus, thalamus, metathalamus and epithalamus; the subthalamus is often considered to be a distinct division.
2. the more caudal of the two brain vesicles formed by specialization of the prosencephalon in the developing embryo. See also brainstem.
References in periodicals archive ?
To obtain sufficient tissue, we pooled diencephalons from 10 tadpoles in each of four independent replicates per treatment.
Poly(A)+RNA from diencephalons from all treatments of experiment 1 and metamorph hypothalami from all treatments of experiment 2 was isolated using the Straight A's mRNA isolation system (Novagen, Madison, WI, USA) and 100 ng was reverse transcribed using Superscript II (Gibco, Gaithersburg, MD, USA) to cDNA using one of three single 18-base arbitrary primers (primer [A.
We focused on the tadpole diencephalon (preoptic/hypothalamic area) because the gene expression program for neural development of this brain region has been characterized (23).