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diencephalonenUK
di·en·ceph·a·lon D0212300 (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(a)- + encephalon.]
di·en·ce·phal′ic (-sə-făl′ĭk) adj.diencephalon (ˌdaɪɛnˈsɛfəˌlɒn) n, pl -la (-lə) (Anatomy) the part of the brain that includes the basal ganglia, thalamus, hypothalamus, and associated areas diencephalic adjdi•en•ceph•a•lon (ˌdaɪ ɛnˈsɛf əˌlɒn)
n., pl. -lons, -la (-lə). the posterior section of the forebrain including the thalami and hypothalamus. [1880–85; di-3 + encephalon] di`en•ce•phal′ic (-səˈfæl ɪk) adj. diencephalonThe “between brain” area of the forebrain between the midbrain and cerebral hemispheres. It includes the thalamus and the hypothalamus.Thesaurus| Noun | 1. |  diencephalon - the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalonbetweenbrain, interbrain, thalmencephaloncorpus mamillare, mamillary body, mammillary body - one of two small round structures on the undersurface of the brain that form the terminals of the anterior arches of the fornixinfundibulum - any of various funnel-shaped parts of the body (but especially the hypophyseal stalk)pineal eye, third eye - a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptilesneural structure - a structure that is part of the nervous systemnervus opticus, optic nerve, optic tract, second cranial nerve - the cranial nerve that serves the retinahypophysis, pituitary, pituitary body, pituitary gland - the master gland of the endocrine system; located at the base of the brainforebrain, prosencephalon - the anterior portion of the brain; the part of the brain that develops from the anterior part of the neural tubebasal ganglion - any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movementthalamus - large egg-shaped structures of grey matter that form the dorsal subdivision of the diencephalonhypothalamus - a basal part of the diencephalon governing autonomic nervous system |
TranslationsDiencephalonenUK
diencephalon (dī'ənsĕf`əlŏn): see brainbrain,
the supervisory center of the nervous system in all vertebrates. It also serves as the site of emotions, memory, self-awareness, and thought. Anatomy and Function
..... Click the link for more information. .Diencephalon the section of the brain that consists of the most anterior (in man, the topmost) part of the brain stem, over which the cerebral hemispheres are located. Inferiorly and posteriorly, the diencephalon borders on the mesencephalon (midbrain). The central portion of the diencephalon, around which the other parts are grouped, is the thalamus. These other parts are the epithalamus, which includes the epiphysis; the hypothalamus, which is connected to the pituitary, or hypophysis; and the subthalamic nucleus. The formations of the diencephalon perform a number of very important functions: they participate in the organization of the body’s sensory processes (sensitivity), motor functions, and autonomic (visceral) activities. The diencephalon plays a very important role in processes related to emotional reactivity and the states of sleep and wakefulness, as well as in the autoregulatory processes of the brain, which are reflected in the overall electrical activity of its higher areas, as recorded in the electroencephalogram. The diencephalon processes and switches the currents of neural impulses that enter from the various sense organs and signal shifts in the body’s external and internal environments. It does the same with impulses from various brain structures and directs them to other areas of the brain, including the cerebral cortex. L. P. LATASH
Diencephalon the section of the brain at the base of the large hemispheres that is the extreme anterior part (in humans the superior part) of the brain stem. The different portions of the diencephalon are the thalamus, hypothalamus, and subthalamus. Together they have very important functions; for example, they participate in the organization of the sensory processes of brain analyzers and in the performance of autonomic functions. Other bodily functions they affect are sleep, memory, instinctive behavior, and emotional and motivational processes. The structures of the diencephalon are associated with the perception of pain sensations and with the integration of the processes that maintain homeostasis. The functions of the glands of internal secretion are regulated through releasing hormones (releasing factors) produced by the neurosecretory cells of the hypothalamus. Aldosterone is produced, for example, by the adrenal cortex with the participation of a special polypeptide from the hypothalamus. L. P. LATASH diencephalon[¦dī·en′sef·ə‚län] (embryology) The posterior division of the embryonic forebrain in vertebrates. diencephalonenUK
diencephalon [di″en-sef´ah-lon] 1. the posterior part of the prosencephalon" >prosencephalon, consisting of the hypothalamus, thalamus, metathalamus, and epithalamus; the subthalamus is often considered to be a distinct division. See also brainstem" >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 (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.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.DiencephalonA 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 SyndromediencephalonenUK
Synonyms for diencephalonnoun the posterior division of the forebrainSynonyms- betweenbrain
- interbrain
- thalmencephalon
Related Words- corpus mamillare
- mamillary body
- mammillary body
- infundibulum
- pineal eye
- third eye
- neural structure
- nervus opticus
- optic nerve
- optic tract
- second cranial nerve
- hypophysis
- pituitary
- pituitary body
- pituitary gland
- forebrain
- prosencephalon
- basal ganglion
- thalamus
- hypothalamus
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