crispation (kris-pa's hun)

A very feeble involuntary muscular quivering. [Lat., crisp are, to throw into tremulous motion.] crista (kris'tah).on See An elevation the crest, inner c.side acustica. of the ampulla of each semicircular canal of the ear, covered with ciliated auditory cells connected with the auditory nerve, c. capituli. A horizontal ridge on the head of a rib, which divides its articular surface into two portions, one for one vertebra, and the other for another. cristae clitoridis. The bony ridges to which the crura of the clitoris are attached, c. gall i. A thick proce on the vertical plate of the ethmoid bone, which projects upward in the median line into the anterior fo a of the skull, c. helicis. The region of the cartilage of the auricle, above the orifice of the external auditory canal, where the helix begins. c. ilii. See crest of the ilium, under crest. c. iliopectinea. See ilio pectineal line, under line. c. infra temporal is. See infra temporal crest, under crest. c. mandibulae. A ridge in the groove on the anterior aspect of the coronoid proce of the inferior maxilla, c. mas to idea. An elevation upon the mastoid portion of the temporal bone, between the digastric fo a and the furrow for the occipital artery, c. o is pubis. See crest of the pubic bone, under crest, cristae penis. Rough ridges upon the outer surface of the descending rami of the os pubis, to which the crura of the penis are attached. c. petrosa. A ridge on the petrous portion of the temporal bone. c. sphenoidal is. See sphenoidal crest, under crest, c. spiral is. See lamina spiral is. c. stapedis. A small ridge upon the inferior surface of the stapes, running in its longest diameter, and dividing it into two nearly equal parts, c. vestibuli. A nearly vertical bony ridge on the inferior and median walls of the vestibule of the ear. [Lat.]