| genital fold | One of the paired longitudinal ridge's developing in the dorsal body wall of the embryo on either side of the dorsal mesentery; the ridge is formed at first by the growing mesonephros and later by the mesonephros and the gonad. Synonym: genital fold, wolffian ridge. (05 Mar 2000) |
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| Marshall's vestigial fold | A pericardial fold lying between the left oblique vein of the atrium and the left superior pulmonary vein containing the obliterated remains of the left superior vena cava. Synonym: plica venae cavae sinistrae, Marshall's vestigial fold, vestigial fold. (05 Mar 2000) |
| rectouterine 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) |
| rectovesical fold | The fold of peritoneum in the male that bounds the rectovesical pouch laterally. Synonym: rectovesical fold. (05 Mar 2000) |
| vestibular fold | One of the pair of folds of mucous membrane stretching across the laryngeal cavity from the angle of the thyroid cartilage to the arytenoid cartilage; they enclose a space called the rima vestibuli or false glottis. Synonym: plica vestibularis, false vocal cord, plica ventricularis, ventricular band of larynx, ventricular fold. (05 Mar 2000) |
| vestigial fold | A pericardial fold lying between the left oblique vein of the atrium and the left superior pulmonary vein containing the obliterated remains of the left superior vena cava. Synonym: plica venae cavae sinistrae, Marshall's vestigial fold, vestigial fold. (05 Mar 2000) |
| caval fold | A fold near the base on the right side of the dorsal mesentery, in which a primordial segment of the inferior vena cava develops between the right subcardinal vein and vessels within the liver. (05 Mar 2000) |
| medial nasal fold | An ectodermally covered mesenchymal swelling lying medial to the olfactory placode or pit in the embryo. Synonym: medial nasal fold, medial nasal primordium, medial nasal process. (05 Mar 2000) |
| glossopalatine fold | One of a pair of ridges or folds of mucous membrane passing from the soft palate to the side of the tongue; it encloses the palatoglossus muscle and forms anterior margin of the tonsillar fossa. Also demarcates oral cavity from isthmus of fauces. Synonym: arcus palatoglossus, anterior palatine arch, anterior pillar of fauces, arcus glossopalatinus, glossopalatine arch, glossopalatine fold. (05 Mar 2000) |
| medial umbilical fold | A fold of peritoneum on the lower part of the anterior abdominal wall that covers the obliterated umbilical artery on either side of the urachus. Synonym: plica umbilicalis medialis, plica hypogastrica. (05 Mar 2000) |
| median glossoepiglottic fold | <anatomy> A fold of mucous membrane in the midline that extends from the back of the tongue to the epiglottis, forming the medial boundary of the epiglottic valleculae. Synonym: plica glossoepiglottica mediana, frenulum epiglottidis, middle glossoepiglottic fold. (05 Mar 2000) |
| median umbilical fold | A fold of peritoneum on the anterior wall of the abdomen covering the urachus, or remains of the allantoic stalk. Synonym: plica umbilicalis mediana, middle umbilical fold, plica umbilicalis media, plica urachi, urachal fold. (05 Mar 2000) |
| vocal fold | One of Ferrein's cords; the sharp edge of a fold of mucous membrane overlying the vocal ligament and stretching along either wall of the larynx from the angle between the laminae of the thyroid cartilage to the vocal process of the arytenoid cartilage; the vocal folds are the agents concerned in voice production. Synonym: plica vocalis, chorda vocalis, labium vocale, true vocal cord, vocal cord, vocal shelf. (05 Mar 2000) |
| gluteal fold | A prominent fold that marks the upper limit of the thigh from the lower limit of the buttock; it coincides with the lower border of the gluteus maximus muscle; the furrow between the buttock and thigh. Synonym: sulcus gluteus, gluteal furrow. (05 Mar 2000) |
| retinal fold | A congenital or secondary fold, consequent to membrane contraction, producing star-shaped, meridional, or circular fold's on the retina. (05 Mar 2000) |