| reticular tissue | Retiform tissue, a tissue in which the argyrophilic collagenous fibres form a network and that usually has a network of reticular cells associated with the fibres. (05 Mar 2000) |
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| primitive reticular cell | A cell with processes making contact with those of other similar cell's to form a cellular network; along with the network of reticular fibres, the reticular cell's form the stroma of bone marrow and lymphatic tissues. (05 Mar 2000) |
| epithelial reticular cell | One of the many-branched epithelial cell's that collectively form the supporting stroma for lymphocytes in the thymus; believed to produce thymosin and other factors that control thymic function. (05 Mar 2000) |
| lateral reticular nucleus | A group of cells in the medulla oblongata, located between the inferior olive and the descending trigeminal nucleus, receiving fibres from the spinal cord and motor cortex and projecting to the cerebellum. Synonym: nucleus lateralis medullae oblongatae, lateral reticular nucleus. (05 Mar 2000) |
| anastomosis | <surgery> An opening created by surgical, traumatic or pathological means between two normally separate spaces or organs. (04 May 1997) |
| anastomosis arteriovenosa | <anatomy> A vessel that directly interconnects an artery and a vein, and that acts as a shunt to bypass the capillary bed. Not to be confused with surgical anastomosis, nor with arteriovenous fistula. (12 Dec 1998) |
| anastomosis, roux-en-y | A y-shaped surgical anastomosis of any part of the digestive system which includes the small intestine as the eventual drainage site. (12 Dec 1998) |
| anastomosis, surgical | Surgical union or shunt between ducts, tubes or vessels. It may be end-to-end, end-to-side, side-to-end, or side-to-side. (12 Dec 1998) |
| aneurysm by anastomosis | A mass of dilated anastomosing vessels that produce a pulsating tumour usually in a superficial position. (05 Mar 2000) |
| arteriolovenular anastomosis | <anatomy> A vessel that directly interconnects an artery and a vein, and that acts as a shunt to bypass the capillary bed. Not to be confused with surgical anastomosis, nor with arteriovenous fistula. (12 Dec 1998) |
| arteriovenous anastomosis | <anatomy> A vessel that directly interconnects an artery and a vein, and that acts as a shunt to bypass the capillary bed. Not to be confused with surgical anastomosis, nor with arteriovenous fistula. (12 Dec 1998) |
| A-V anastomosis | <anatomy> A vessel that directly interconnects an artery and a vein, and that acts as a shunt to bypass the capillary bed. Not to be confused with surgical anastomosis, nor with arteriovenous fistula. (12 Dec 1998) |
| Beclard's anastomosis | An anastomosis between the right and the left end-branch of the deep lingual artery. Synonym: arcus raninus. (05 Mar 2000) |
| bevelled anastomosis | Anastomosis performed after cutting each of the structures to be joined in an oblique fashion. (05 Mar 2000) |
| Billroth I anastomosis | Excision of the pylorus with end-to-end anastomosis of stomach and duodenum. Synonym: Billroth I anastomosis. (05 Mar 2000) |