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Date "EPITHALAMUS" was first used in popular English literature: sometime before 1985. (references)

Specialty Definition: EPITHALAMUS

DomainDefinition
HealthThe dorsal posterior subdivision of the diencephalon. The epithalamus is generally considered to include the habenular nuclei (habenula) and associated fiber bundles, the pineal body, and the epithelial roof of the third ventricle. The anterior and posterior paraventricular nuclei of the thalamus are included with the thalamic nuclei although they develop from the same pronuclear mass as the epithalamic nuclei and are sometimes considered part of the epithalamus. (references)
WikipedicThe epithalamus is a dorsal posterior segment of the diencephalon (a segment in the middle of the brain also containing the hypothalamus and the thalamus) which includes the habenula, the stria medullaris and the pineal body. Its function is the connection between the limbic system to other parts of the brain. (references)

Source: compiled by the editor from various references; see credits.

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Extended Definition: Epithalamus

Epithalamus

Brain: Epithalamus
Mesal aspect of a brain sectioned in the median sagittal plane. Epithalamus labeled in red, by 'habenular commissure', 'pineal body', and 'posterior commissure', with its projection anteriorly consisting stria medullaris
Latin epithalamus
Gray's subject #189 812
NeuroNames hier-275
MeSH Epithalamus

The epithalamus is a dorsal posterior segment of the diencephalon (a segment in the middle of the brain also containing the hypothalamus and the thalamus) which includes the habenula, the stria medullaris and the pineal body. Its function is the connection between the limbic system to other parts of the brain.

Functions

Some functions of its components include the secretion of melatonin by the pineal gland.

Components

The epithalamus comprises the trigonum habenulæ, the pineal body, and the posterior commissure.

External links

Brain: diencephalon
Epithalamus
Pineal body • Habenula (Habenular nuclei) • Stria medullaris • Habenular trigone • Habenular commissure
Thalamus/nuclei
paired: AN • Ventral (VA/VL, VP/VPM/VPL) • Lateral (Pulvinar) • Metathalamus (MG, LG)

midline: MD • Intralaminar (Centromedian) • Midline nuclear group • Interthalamic adhesion • Medullary laminae

surface: reticular

tracts to thalamus: Mammillothalamic tract • Thalamic fasciculus • Lenticular fasciculus • Ansa lenticularis • Medial lemniscus • Trigeminal lemniscus • Spinothalamic tract • Lateral lemniscus
Hypothalamus
autonomic zones: Anterior (parasympathetic/heat loss) • Posterior (sympathetic/heat conservation)

endocrine - posterior pituitary: magnocellular/Paraventricular/Supraoptic (oxytocin/vasopressin)

endocrine - other: parvocellular/Arcuate (dopamine/GHRH) • Preoptic (GnRH) • Suprachiasmatic (melatonin)

emotion: Lateral (hunger) • Ventromedial (satiety) • Dorsomedial (rage)

surface: Median eminence/Tuber cinereum • Mammillary body • Infundibulum

tracts: Medial forebrain bundle

Pituitary: (Posterior is diencephalon, but anterior is glandular)
Subthalamus
Subthalamic nucleus • Zona incerta

Source: adapted by the editor from Wikipedia, the free encyclopedia; from the article "Epithalamus". Image Credit.



Topics by Level of Interest: EPITHALAMUS

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Epithalamus8   Epithalamus8

Source: the editor, created by/for EVE to gauge likely levels of human interest in linguistically triggered topics (compiled across various sources, such as Wikipedia and specialty expression glosses).

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