| pleuroperitoneal fold | A tissue fold jutting into the caudal portion of the embryonic pericardioperitoneal canal; it develops into the dorsal portion of the definitive diaphragm and is formed by the lungs growing caudally and the liver expanding cranially. Synonym: pleuroperitoneal membrane. (05 Mar 2000) |
|---|---|
| posterior axillary fold | Bounds axilla posteriorly; formed by skin and fascia overlying latissimus dorsi and teres major muscles and tendons of insertion. (05 Mar 2000) |
| Hasner's fold | A fold of mucous membrane guarding the lower opening of the nasolacrimal duct. Synonym: plica lacrimalis, Bianchi's valve, Hasner's fold, Hasner's valve, Huschke's valve, Rosenmuller's valve. (05 Mar 2000) |
| presplenic fold | A fan-shaped fold of peritoneum that passes from the gastrosplenic ligament near the lower end of the spleen to the phrenicocolic ligament with which it blends. It contains branches of the splenic or the left gastroepiploic artery. (05 Mar 2000) |
| head fold | A ventral folding of the cephalic extremity in the embryonic disk, so that the brain lies rostrad to the mouth and pericardium. (05 Mar 2000) |
| sacrouterine 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) |
| sacrovaginal fold | The lower part of the sacrouterine fold. Synonym: plica rectovaginalis. (05 Mar 2000) |
| sacrovesical fold | The fold of peritoneum in the male that bounds the rectovesical pouch laterally. Synonym: rectovesical fold. (05 Mar 2000) |
| salpingopalatine fold | A ridge of mucous membrane passing from the anterior border of the opening of the auditory (eustachian) tube to the palate. Synonym: plica salpingopalatina, plica tubopalatina. (05 Mar 2000) |
| salpingopharyngeal fold | A ridge of mucous membrane extending from the lower end of the tubal elevation along the wall of the pharynx overlying the salpingopharyngeus muscle. Synonym: plica salpingopharyngea. (05 Mar 2000) |
| Schultze's fold | A fold of amniotic membrane enclosing the yolk stalk and extending from the point of insertion of the umbilical cord to the yolk sac; in reptiles and birds it is the reflected edge of the amnion where it folds over to cover the embryo during early development. Synonym: Schultze's fold. (05 Mar 2000) |
| 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) |
| 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) |