Habenular trigone

Habenular trigone
Details
Identifiers
Latin	trigonum habenulae
NeuroNames	293
TA98	A14.1.08.005
TA2	5663
FMA	74868
Anatomical terms of neuroanatomy [edit on Wikidata]

The habenular trigone is a small^[1] depressed^[2] triangular area^[1]^[2] situated (sources differ) anterior^[1]/superior^[2] to the superior colliculus. It contains the habenular nuclei.^[1]^[2]

Anatomy

The habenular trigone is situated on the lateral aspect of the posterior part of the taenia thalami.^[2]

^ ^a ^b ^c ^d Waxman, Stephen G. (2009). Clinical Neuroanatomy (26th ed.). New York: McGraw-Hill Medical. p. 127. ISBN 978-0-07-160399-7.
^ ^a ^b ^c ^d ^e Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 812.

Anatomy of the diencephalon of the human brain

Surface	Pineal gland Habenula Habenular trigone Habenular commissure
Grey matter	Pretectal area Habenular nuclei Subcommissural organ

Surface	Stria medullaris Thalamic reticular nucleus Taenia thalami
Grey matter/ nuclei	paired: AN Ventral VA/VL VP/VPM/VPL Lateral LD LP Pulvinar nuclei Metathalamus MG LG P cell M cell K cell midline: MD Intralaminar Centromedian Midline nuclear group Interthalamic adhesion
White matter	Mammillothalamic tract Pallidothalamic tracts Ansa lenticularis Lenticular fasciculus Thalamic fasciculus DCML Medial lemniscus Trigeminal lemniscus Spinothalamic tract Lateral lemniscus Dentatothalamic tract Acoustic radiation Optic radiation Subthalamic fasciculus Ventral trigeminal tract Medullary laminae

Surface

Autonomic zones	Anterior (parasympathetic/heat loss) Posterior (sympathetic/heat conservation)
Endocrine	posterior pituitary: Paraventricular Magnocellular neurosecretory cell Parvocellular neurosecretory cell Supraoptic oxytocin/vasopressin other: Arcuate (dopamine/GHRH) Preoptic (GnRH) Suprachiasmatic (melatonin)
Emotion	Lateral Ventromedial Dorsomedial