CREST

n. Kre2st. Gr., Ad<o9. Lat., crista. Fr., crete. Ger., Kamm. It., Sp., cresta. The comb of a cock; in ornithology, a collection of long feathers on the head; in general, any ridge-like structure. Anterior lacrymal c. Lat., crista lacrimal is anterior. Fr., crete lacrimale anterieure. The inner sharp edge of the lacrymal groove of the superior maxilla. [L, 332.] Auditive c. See CRISTA auditiva. Canine c. Fr., crete canine. An elevation upon the superior maxilla over the situation of the root of the canine tooth. ["Rev. d'anthrop.," 1876, p. 515 (L).] Cnemical c. A ridge upon the posterior aspect of the tibia of certain birds. [L, 200.] C. of the clitoris. See CRISTA clitoridis.C. of the ethmoid bone. See CRISTA gall i. C. of the ilium. Lat., crista ilii (seu o is ilii). Fr., crete iliaque (ou de Vos iliaque). Ger., Darmbeinkamm. It., cresta dell' ileo. Sp., cresta iliac a. The thickened upper border of the ilium. C. of the pubes, C. of the pubic bone. Lat., crista o is pubis. Fr., crete pubienne. Ger.. Schaamb"inkamm. A rough ridge upon the upper border of the pubic bone. [C, 3; L.] C. of the sacrum. Lat., crista sacral is. Fr., crete sacree. Ger., Kreuzbeinhuste. A longitudinal c., situated in the median line, on the posterior surface of the sacrum, consisting of a series of eminences representing the spinous proce es of the vertebrae. C. of the tibia. Lat., crista tibiae. Fr., crete de la tibia. Ger., Schienbeinkamm. The sharp anterior border of the tibia. C. of the urethra. See CAPUT gall in agin is. Dental c., Gingiyal c. Lat., crista gingival is, cartilago dental is. Fr., crete gingivale, cartilage dentaire. Syn.: dental cartilage. A whitish-gray, hard, sharp projection formed by the gingival mucous membrane of the edentulous foetus along the line subsequently to be occupied by the teeth; composed of vascular fibrous ti ue. [A, 301.] Ethnioidal c. Lat., crista ethmoidal is. Fr., crete ethmoldale. 1. A transverse ridge upon the inner surface of the nasal proce of the superior maxilla against which the anterior portion of the lateral ma of the ethmoid bone fits. 2. See Superior turbinate CREST. External occipital c. Lat., crista occipital is extern a. Fr., crete occipitale externe. A. ridge which extends in the middle line between the posterior margin of the foramen magnum and the external occipital protuberance of the occipital bone. [L, 332.J Frontal c. Lat.. crista frontal is. Fr., crete frontale. A ridge upon the cerebral surface of the frontal bone which extends between the foramen caecum and the anterior end of the groove of the longitudinal sinus. [L, 142, 332.] Iliac c. See C. of the ilium. Incisor c. Lat., crista incisiva [Henle]. Fr., crete incisive. The prolongation forward of the nasal c. which terminates in the anterior nasal spine, and having the cartilage of the septum of the nose resting upon it. [L, 142.] Inferior turbinate c. A horizontal ridge on the nasal surface of the superior maxilla for articulation with the inferior turbinal bone. [L, 81, 142.] Infra-temporal c. Fr., crete sous temporale. A ridge on the external surface of the greater wing of the sphenoid bone which separates the part of the bone which forms a portion of the temporal fo a, and that which aids in forming the zygomatic fo a. [L, 31, 142.1 Internal occipital c. Lat., crista occipital is intern a. Fr., crete occipitale interne. A ridge on the internal surface of the occipital bone, extending between the posterior margin of the foramen magnum and the internal occipital protuberance. [L, 31, 142.] Lambdoid c. Fr., crete lamb do'ide. In dogs, an elevation upon the posterior surface of the skull which is made up by the union in the middle line of two ridges, each of which runs downward and outward, on each side at the line of junction of the parietal and supra occipital bones, to the squamosal bone, upon which it is continued to the upper edge of the external auditory meatus, forming the posterior edge of the temporal fo a. [L, 153.] Nasal c. Lat., ci-ist a nasal is. 1. A c. on the palatal proce of the superior maxilla, which receives the lower border of the vomer. 2. The vertical prolongation backward of the internal surface of the nasal bone which forms a portion of the nasal septum. [L, 31, 142, 172, 332.] Neural c. In the embryo, a series of cellular swellings continuous with the medullary plates close to the place of inflection of the epiblast into the involution that forms the primary brain and spinal cord. The posterior roots of the spinal nerves and most of the cranial nerves are formed from them. [A, 5.]- -Occipital c. See Lambdoid c. Olfactory c'8 [Verrill]. Longitudinal ridges upon the neck of the Oigopida, believed to be olfactory in function. [" Quart. Jour, of Micr. Sci." (L).] Orbital c. Lat., crista orbital is. The lower rounded margin of the orbital surface of the sphenoid bone. [L, 332.] Posterior lacrymal c. Lat., crista lacrimal is posterior. Fr., crete lacrymale posterieure. The vertical ridge upon the outer surface of the lacrymal bone which divides it into two unequal parts, and a ists in forming the inner side of the canal for the nasal duct. [L, 142, 332.] Sagittal c. In dogs, a ridge upon the posterior and upper surface of the skull, which runs forward in the median line, and divides near the fronto parietal suture into two le marked ridges which curve out to the superior posterior angle of the orbit. [L, 153.] Sphenoidal c. A thin projecting edge of bone in the middle line of the anterior surface of the body of the sphenoid bone. [C.] Spheno-maxillary c. An arched ridge formed partly by the anterior surface of the ala magna of the sphenoid bone and partly by the pterygoid proce which forms the edge of the spheno-maxillary fi ure. [L, 31.] Sublingual c. A ridge in the floor of the mouth of solipeds at the top of which the ducts of the sublingual gland open. [L, 13.] Superior turbinate c. Lat., crista turbinal is superior. A ridge upon the internal surface of the vertical plate of the palate bone which articulates with the middle turbinate bone. [L, 142, 332.] Temporal c. Lat., crista temporal is. Fr., crete temporale. Ger.,Schldfenbeinkamm. Syn.: O, no; O, not; O, whole; Th, thin; Th2, the; U, like oo in too; 151 [s. 443]