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Relating to a habenula, especially the stalk of the pineal body.
Farlex Partner Medical Dictionary © Farlex 2012


Relating to a habenula, especially the stalk of the pineal body.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(hă-ben′yŭ-lă) plural.habenulae [L. habenula, little rein, strap]
1. A frenum or any reinlike or whiplike structure.
2. A peduncle or stalk attached to the pineal body of the brain. Fibers that travel posteriorly along the dorsomedial border of the thalamus to the habenular ganglia (epithalamus) resemble reins.
3. A narrow bandlike stricture. habenular (-lăr), adjective

habenula urethralis

Either of two whitish bands between the clitoris and meatus urethra in young females.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Rusak, "Circadian firing-rate rhythms and light responses of rat habenular nucleus neurons in vivo and in vitro," Neuroscience, vol.
Veh, "Subnuclear organization of the rat habenular complexes," Journal of Comparative Neurology, vol.
Veh, "Differential projections from subfields in the lateral preoptic area to the lateral habenular complex of the rat," Journal of Comparative Neurology, vol.
The THC projects from the ventral diencephalon to form the habenular commissure (Figure 4(c)).
With BSE-L, the staining was finer and essentially confined to the habenular, geniculate, and dorsal nuclei of the thalamus; the lateral hypothalamus; the lacunosom moleculare layer of the hippocampus; the superficial gray layer of the superior colliculus; and the raphe nuclei of the brain stem.
The pineal gland, also known as pineal body, is a medium and odd endocrine organ, which originates in the second month of intrauterine life (Macchi & Bruce, 2004) as a diencephalon roof evagination with a conical shape (Bertolucci & Foa, 2004), is aimed antero-posterior and rests on the path that separates the upper colliculus of the posterior wall of the third ventricle and is joined habenular and posterior commissures (Rouviere & Delmas, 1999).
Kiening, "Deep brain stimulation of the lateral habenular complex in treatment-resistant depression: traps and pitfalls of trajectory choice," Neurosurgery, vol.
The finding of an increased number of nAChRs in the regions of the epithalamus (medial habenular area) and the interpeduncular nucleus (IPN) seem to be particularly interesting in the context of a sleep disorder.
2004) and in cholinergic neurons of the medial habenular nucleus (Miyake and Itoh 1996), and is involved specifically in neurite outgrowth (Hart et al.
Rat fibroblast growth factor receptor-4 mRNA in the brain is preferentially expressed in cholinergic neurons in the medial habenular nucleus.
Of all the regions examined, SGC (-115%; p < 0.001) and NGa (-90%) of the mesencephalon (Figure 7A) seemed to contain the greatest down-regulating activities of [H.sub.2]R-producing neurons, whereas a moderate (p < 0.05) reduction was evident in the habenular nucleus (NH; -45%).