| spiral fold of cystic duct | A series of crescentic folds of mucous membrane in the upper part of the cystic duct, arranged in a somewhat spiral manner. Synonym: plica spiralis ductus cystici, Amussat's valve, Heister's valve, spiral valve of cystic duct, valvula spiralis. (05 Mar 2000) |
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| nail fold | The fold of skin overlapping the lateral and proximal margins of the nail. Synonym: vallum unguis, wall of nail. (05 Mar 2000) |
| nasojugal fold | A shallow groove in the skin that extends downward and laterally from the medial canthus. (05 Mar 2000) |
| stapedial fold | A reflection of the delicate mucous membrane from the posterior wall of the tympanic cavity that covers the stapes. Synonym: plica stapedis. (05 Mar 2000) |
| Nelaton's fold | See: transverse rectal folds. (05 Mar 2000) |
| neural fold | A crease that forms in the neural plate during neurulation. (18 Nov 1997) |
| sublingual fold | An elevation in the floor of the mouth beneath the tongue, on either side, marking the site of the sublingual gland. Synonym: plica sublingualis. (05 Mar 2000) |
| nucleotide binding fold | Protein motif consisting of a fold or pocket with certain conserved residues, required for the binding of nucleotides. (18 Nov 1997) |
| superior duodenal fold | A fold of peritoneum bounding the superior duodenal recess. Synonym: plica duodenalis superior, plica duodenojejunalis, duodenojejunal fold. (05 Mar 2000) |
| Dennie's infraorbital fold | An accentuated line or fold below the margin of the lower eyelid; characteristic in atopic dermatitis. Synonym: Dennie's infraorbital fold. (05 Mar 2000) |
| synovial fold | A projection from the synovial membrane of a joint extending toward or between the two articular surfaces. Synonym: plica synovialis. (05 Mar 2000) |
| dinucleotide fold | A structural domain in certain proteins that binds NAD+ or NADP+. Synonym: dinucleotide domain. (05 Mar 2000) |
| Douglas' fold | A fold of peritoneum, containing the rectouterine muscle, passing from the sacrum to the base of the broad ligament on either side, forming the lateral boundary of the rectouterine (Douglas') pouch. Synonym: plica rectouterina, Douglas' fold, Jarjavay's ligament, Petit's ligament, rectouterine fold, uterosacral ligament. (05 Mar 2000) |
| duodenojejunal fold | A fold of peritoneum bounding the superior duodenal recess. Synonym: plica duodenalis superior, plica duodenojejunalis, duodenojejunal fold. (05 Mar 2000) |
| duodenomesocolic fold | A fold of peritoneum bounding the inferior duodenal recess. Synonym: plica duodenalis inferior, plica duodenomesocolica, duodenomesocolic fold. (05 Mar 2000) |