| habena | 1. A frenum or restricting fibrous band. 2. A restraining bandage. Synonym: habenula. Origin: L. Strap (05 Mar 2000) |
|---|---|
| habenal | Relating to a habena. (05 Mar 2000) |
| habenula | A small protuberance at the dorsal, posterior corner of the wall of the third ventricle, adjacent to the dorsal thalamus and pineal body. It contains the habenular nuclei and is a major part of the epithalamus. (12 Dec 1998) |
| habenula of caecum | Extension of the mesocolic tenia, dorsal or ventral to the terminal ileum. (05 Mar 2000) |
| habenula urethralis | One of two fine, whitish lines running from the meatus urethrae to the clitoris in girls and young women; the vestiges of the anterior part of the corpus spongiosum. (05 Mar 2000) |
| habenulae perforata | The perforations along the tympanic lip of the spiral lamina giving passage to the cochlear nerves. Synonym: habenulae perforata, zona perforata. (05 Mar 2000) |
| habenular | Relating to a habenula, especially the stalk of the pineal body. (05 Mar 2000) |
| habenular commissure | The connection between the right and left habenular nuclei; the decussation of fibres of the two striae medullares, forming the dorsal portion of the peduncle of the pineal body. Synonym: commissure of habenulae, habenular commissure. (05 Mar 2000) |
| habenular nucleus | The gray matter of the habenula, composed of a small-celled medial and a larger-celled lateral habenular nucleus; both nuclei receive fibres from basal forebrain regions (septum, basal nucleus, lateral preoptic nucleus); the lateral habenular nucleus receives an additional projection from the medial segment of the globus pallidus. Both nuclei project by way of the retroflex fasciculus to the interpeduncular nucleus and a medial zone of the midbrain tegmentum. Synonym: nucleus habenulae, ganglion habenulae. (05 Mar 2000) |
| habenular sulcus | A small groove located between the habenular trigone and the adjacent dorsal thalamus. (05 Mar 2000) |
| habenular trigone | A small triangular area on the dorsomedial surface of the thalamus at the caudal end of the medullary stria, corresponding to the underlying habenula. Synonym: trigonum habenulae, trigone of habenula. (05 Mar 2000) |
| habenulointerpeduncular tract | A compact bundle of fibres arising in the habenula and passing ventralward to the interpeduncular nucleus at the base of the midbrain; part of its fibres bypass this nucleus and terminate in the raphe nuclei of the caudal mesencephalic tegmentum. Synonym: fasciculus retroflexus, habenulointerpeduncular tract, Meynert's fasciculus, Meynert's retroflex bundle. (05 Mar 2000) |
| habenulopeduncular tract | habenulopeduncular tract |
| Haber's syndrome | <syndrome> A permanent flushing and telangiectasia of the cheeks, nose, forehead, and chin, with prominent follicular openings, small papules with scaling, and minute pitted areas; occasionally accompanied by scaly and keratotic lesions of the trunk. (05 Mar 2000) |
| Haber, Henry | <person> 20th century British dermatologist. See: Haber's syndrome. (05 Mar 2000) |