| enamel projection | Extension of enamel into furcation. (05 Mar 2000) |
|---|---|
| enamel pulp | A layer of stellate cells in the enamel organ. (05 Mar 2000) |
| enamel rod inclination | The direction of the enamel rods with reference to the outer surface of the enamel of a tooth. (05 Mar 2000) |
| enamel rods | The calcified, microscopic rods radiating from the surface of the dentin, forming the substance of the enamel of a tooth. Synonym: enamel fibres, enamel prisms, enamel rods. (05 Mar 2000) |
| enamel rod sheath | Organic covering of the individual enamel rod. (05 Mar 2000) |
| enamel tuft | A group of structures representing defects in tooth mineralization that extend from the dentino-enamel junction into the enamel to about one-half its thickness. (05 Mar 2000) |
| enamel wall | In dentistry, the part of the wall of a cavity consisting of enamel. (05 Mar 2000) |
| abdominal fissure | Congenital failure of the ventral body wall to close. See: celosomia, gastroschisis. (05 Mar 2000) |
| Ammon's fissure | A pearl-shaped opening in the sclera during early embryogenesis. (05 Mar 2000) |
| anal fissure | A tear or superficial laceration that can occur in the mucosa that lines the anal canal. (27 Sep 1997) |
| anterior median fissure of medulla oblongata | The longitudinal groove in the midline of the anterior aspect of the medulla oblongata; it is the medullary equivalent of the anterior median fissure of the spinal cord and ends at the foramen caecum posterius; its caudal part is obliterated by the decussation of the pyramids. Synonym: fissura mediana anterior medullae oblongatae, anteromedian groove. (05 Mar 2000) |
| anterior median fissure of spinal cord | A deep median fissure on the anterior surface of the spinal cord. Synonym: fissura mediana anterior medullae spinalis, anteromedian groove, sulcus ventralis. (05 Mar 2000) |
| antitragohelicine fissure | A fissure in the auricular cartilage between the cauda helicis and the antitragus. Synonym: fissura antitragohelicina. (05 Mar 2000) |
| ape fissure | A small, inconstant semilunar groove on the cortical convexity near the occipital pole, marking the anterior border of the striate cortex (area 17) and considered homologous with the major sulcus of the same name that is a more constant feature of the cerebral cortex in monkeys and apes. Synonym: sulcus lunatus cerebri, ape fissure, lunate fissure, lunate sulcus, simian fissure. (05 Mar 2000) |
| auricular fissure | A fissure separating the tympanic portion from the mastoid portion of the temporal bone; it transmits the auricular branch of the vagus nerve. Synonym: fissura tympanomastoidea, auricular fissure, tympanomastoid suture. (05 Mar 2000) |