| endoderm | A germ layer lying remote from the surface of the embryo that gives rise to internal tissues such as gut. Contrast mesoderm and ectoderm. (18 Nov 1997) |
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| endodermal canal | A flat sheet of intraembryonic endoderm that will change into a tubular gut due to the folding of embryonic body-head, tail and lateral body folds. Synonym: archenteron, celenteron, endodermal canal, subgerminal cavity. (05 Mar 2000) |
| endodermal cells | Embryonic cell's forming the yolk sac and giving rise to the epithelium of the alimentary and respiratory tracts and to the parenchyma of associated glands. Synonym: entodermal cells. (05 Mar 2000) |
| endodermal cloaca | Terminal portion of the hindgut internal to the cloacal membrane of the embryo. (05 Mar 2000) |
| endodermal pouches | pharyngeal pouches |
| endodermal sinus tumour | An unusual and aggressive tumour of germ-cell origin that reproduces the extraembryonic structures of the early embryo. It is the most common malignant germ cell tumour found in children. It is characterised by a labyrinthine glandular pattern of flat epithelial cells and rounded papillary processes with a central capillary (schiller-duval body). The tumour is rarely bilateral. Before the use of combination chemotherapy, the tumour was almost invariably fatal. (12 Dec 1998) |
| endodermic | <biology> Of or pertaining to the endoderm. Source: Websters Dictionary (01 Mar 1998) |
| endodermis | Single layer of cells surrounding the central stele (vascular tissue) in roots. The radial and transverse walls contain the hydrophobic Casparian band, that prevents water flow in or out of the stele through the apoplast. Also present in some stems. (18 Nov 1997) |
| Endodermophyton | Former name for Trichophyton, especially for the species causing tinea imbricata, T. Concentricum. Origin: endo-+ G. Derma, skin, + phyton, plant (05 Mar 2000) |
| endodiascope | <instrument> An X-ray tube that may be placed within a cavity of the body; an archaic device. (05 Mar 2000) |
| endodiascopy | X-ray visualization by means of an endodiascope; an archaic procedure. Origin: endo-+ G. Dia, through, + skopeo, to view (05 Mar 2000) |
| endodontia | A dental specialty concerned with the maintenance of the dental pulp in a state of health and the treatment of the pulp cavity (pulp chamber and pulp canal). (12 Dec 1998) |
| endodontic stabiliser | A pin implant passing through the apex of a tooth from its root canal and extending well into the underlying bone to provide immobilization of periodontally involved teeth. (05 Mar 2000) |
| endodontic treatment | The means by which painful or diseased teeth, in which the pulp is involved, are restored to a healthy state, removal of a normal, diseased, or dead pulp by biochemical and mechanical means, enlargement and sterilization of the root canal, followed by filling the canal, to effect healing of diseased periapical tissues, the diagnosis and treatment of diseases of the pulp and their sequelae. Synonym: endodontic treatment. (05 Mar 2000) |
| endodontics | A dental specialty concerned with the maintenance of the dental pulp in a state of health and the treatment of the pulp cavity (pulp chamber and pulp canal). (12 Dec 1998) |