Ansa

(au'-sah). A loop or curved structure suggesting by its form the handle of a ve el; a loop in a nerve, intestine, or ve el, or in a surgeon's thread. A. capitis, the zygomatic arch. A., Haller's, the loop formed by the nerve joining the facial and glo opharyngeal nerves. A., Henle's. See Henle 's Loop. A. hypo glo i, a loop formed at the middle of the neck by the junction of the descend ens noni nerve with branches of the second and third cervical nerves. A. of Reil, the name given to that portion of the brain just ventrad of the thalamus. A. sacral is, a loop joining the ganglion impar (G. Walter i) with the sympathetic trunks of the two sides. A. of Vieu ens, a loop extending from the third cervical ganglion and surrounding the subclavian artery. A. of Wrisberg, the nerve joining the right great splanchnic and right pneumogastric nerves.