| transverse rectal folds | The three or four crescentic folds placed horizontally in the rectal mucous membrane; the superior rectal fold is situated near the beginning of the rectum on the left side; the middle rectal fold (Nelaton's fold) is most prominent and consistent and projects from the right side about 8 cm above the anus (approximately the level of the floor of the rectouterine or rectovesical pouch); the inferior rectal fold is on the left side about 5 cm above the anus. Synonym: plicae transversales recti, Houston's folds, Houston's valves, Kohlrausch's valves, plicae recti, rectal folds, rectal valves. (05 Mar 2000) |
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| epiglottic folds | One of the three folds of mucous membrane passing between the tongue and the epiglottis, lateral glossoepiglottic fold on either side, and median glossoepiglottic fold centrally. Synonym: plicae epiglottica. (05 Mar 2000) |
| tubal folds of uterine tubes | Many longitudinal folds in the mucous membrane of the uterine (fallopian) tube. Synonym: plicae tubariae tubae uterinae. (05 Mar 2000) |
| Kerckring's folds | The numerous folds of the mucous membrane of the small intestine, running transversely for about two-thirds of the circumference of the gut. Synonym: circular folds, Kerckring's folds, Kerckring's valves, valvulae conniventes. (05 Mar 2000) |
| labioscrotal folds | Lateral fold's at either side of the embryonic cloacal membrane that develop into either the scrotum or the labia majora. (05 Mar 2000) |
| folds of iris | Numerous very fine, almost microscopic, radial folds on the posterior surface of the iris that extend around the pupillary margin. Synonym: plicae iridis. (05 Mar 2000) |
| lateral folds | Ventral foldings of the lateral margins of the embryonic disk, the development of which establishes the definitive embryonic body form. (05 Mar 2000) |