| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |
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| VRP | ventral root potential |
| VRR | ventral root reflex |
| pleuroperitoneal canal | The communication between the embryonic pleural and peritoneal cavities. (05 Mar 2000) |
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| musculotubal canal | A canal beginning at the anterior border of the petrous portion of the temporal bone near its junction with the squamous portion, and passing to the tympanic cavity; it is divided by the cochleariform process into two saemicanals: one for the auditory (eustachian) tube, the other for the tensor tympani muscle. Synonym: canalis musculotubarius. (05 Mar 2000) |
| Corti's canal | The spiral canal in the organ of Corti, formed by the outer and inner pillar cells or rods of Corti; it is filled with fluid and occasionally crossed by nonmedullated nerve fibres. Synonym: Corti's canal. (05 Mar 2000) |
| Cotunnius' canal | aqueduct of vestibule |
| craniopharyngeal canal | A tubular outgrowth of ectoderm from the stomodeum of the embryo; it grows dorsad toward the infundibular process of the diencephalon, around which it forms a cup-like mass, giving rise to the pars distalis and pars juxtaneuralis of the hypophysis. Synonym: craniopharyngeal canal, hypophyseal pouch, Rathke's diverticulum, Rathke's pocket, Rathke's pouch. (05 Mar 2000) |
| Hannover's canal | The potential space between the ciliary zonule and the vitreous body. (05 Mar 2000) |
| sacral canal | The continuation of the vertebral canal in the sacrum. Synonym: canalis sacralis. (05 Mar 2000) |
| Santorini's canal | The excretory duct of the head of the pancreas, one branch of which joins the pancreatic duct, the other opening independently into the duodenum at the lesser duodenal papilla. Synonym: ductus pancreaticus accessorius, Bernard's canal, Bernard's duct, ductus dorsopancreaticus, Santorini's canal, Santorini's duct. (05 Mar 2000) |
| prominence of facial canal | The prominence on the medial wall of the tympanic cavity above the vestibular (oval) window produced by the presence of the facial canal. Synonym: prominentia canalis facialis. (05 Mar 2000) |
| prominence of lateral saemicircular canal | The slight bulge in the medial wall of the epitympanic recess caused by the proximity of the lateral saemicircular canal. Synonym: prominentia canalis saemicircularis lateralis. (05 Mar 2000) |
| Hensen's canal | A short membranous tube passing from the lower end of the saccule to the cochlear duct of the membranous labyrinth. Synonym: ductus reuniens, canaliculus reuniens, canalis reuniens, Hensen's canal, Hensen's duct, uniting canal. (05 Mar 2000) |
| Schlemm's canal | sinus venosus sclerae |
| hiatus of canal for greater petrosal nerve | The opening on the anterior aspect of the petrous part of the temporal bone which leads to the facial canal and gives passage to the greater petrosal nerve. Synonym: hiatus canalis nervi petrosi majoris, fallopian hiatus, Ferrein's foramen, hiatus canalis facialis, hiatus of canal for greater petrosal nerve. (05 Mar 2000) |
| hiatus of canal of lesser petrosal nerve | <anatomy, nerve> The small opening in the petrous bone lateral to the hiatus of facial canal that gives passage to the lesser petrosal nerve. Synonym: hiatus canalis nervi petrosi minoris, Arnold's canal, canalis nervi petrosi superficialis minoris. (05 Mar 2000) |
| hiatus of facial canal | The opening on the anterior aspect of the petrous part of the temporal bone which leads to the facial canal and gives passage to the greater petrosal nerve. Synonym: hiatus canalis nervi petrosi majoris, fallopian hiatus, Ferrein's foramen, hiatus canalis facialis, hiatus of canal for greater petrosal nerve. (05 Mar 2000) |