flexure

(fleks’ir) [(L. flexu’ra]. A bend or fold; a curved part or structure. as i cranial f., 2 bend in the embryo at the upper end of the medulla oblong at a. caudal f., the bend at the aboral end of the embryo. cephalic f., ς f., the curve at the cephalic end of the embryo. cerebral f., one of the bends in the embryonic brain. cervical f., a bend in the neural tube of the em- 375 FLUID bryo at the junction of the brain and spinal cord. dorsal f., one of the flexures of the embryo in the mid-dorsal region. duodenojejunal f., the bend at the point of junction of the duodenum and jejunum. hemal f., a curvature of the cerebral vesicles toward the hemal or ventral aspect. hepatic f., the bend of the colon at the junction of its ascending and transverse parts. lumbarf., the ventral curvature of the back in the lumbar region. mesencephalic f., a flexure in the neural tube of the vertebrate embryo at the level of the mesencephalon. pontine f., a flexure of the hind-brain in the embryo. sacralf. Same as caudal f. sigmoid f., a part of the colon between the descending colon and the rectum. splenic f., the bend of the colon at the junction . of the transverse and descending portions. PFlindt’s spots (flints) [N. Flindt, contemporary Danish physician]. Koplik’s spots.