commis sur a (kom-is-su'ra)

See commi ure, c. alba anterior. The anterior white commi ure of the spinal cord. c. ansa. The outermost layer of the optic chasm, consisting of fibers which descend from the lamina terminal is cinerea, pa superficially over the anterior and inferior surface of the chiasm, and continue their course backward to be lost in the tuber cinereum. c. arcuata anterior. The anterior fibrae arcuatae orbita les of the optic chiasm, c. arcuata posterior (seu postica). The posterior fibrae arcuatae cerebra les of the optic chiasm. c. cra i or is nervi acmula. The middle part of the anterior cerebral commi ure of the brain, c. cruciata. That portion of the optic chiasm in which the fibers are seen to actually decu ate, c. labiomm. A point of junction of the lips (of the mouth, the vulva, or the cervix uteri), c. labiorum dextra. The union of the upper and lower lips on the right side of the face. c. labiorum sinistra. The union of the upper and lower lips upon the left side of the face. c. pedunculorum conarii. The point of union of the two peduncles of the pineal gland, c. serrati lis. Union of bones by suture. [Lat, con, with, + mitt ere, to send.]