| crista occipitalis externa | A ridge extending from the external occipital protuberance to the border of the foramen magnum. Synonym: crista occipitalis externa, linea nuchae mediana. (05 Mar 2000) |
|---|---|
| crista occipitalis interna | A ridge running from the internal occipital protuberance to the posterior margin of the foramen magnum, giving attachment to the falx cerebelli. Synonym: crista occipitalis interna. (05 Mar 2000) |
| crista palatina | A transverse ridge near the posterior border of the bony palate, located on the inferior surface of the horizontal plate of the palatine bone. Synonym: crista palatina. (05 Mar 2000) |
| crista phallica | A longitudinal fold on the posterior wall of the urethra extending from the uvula of the bladder through the prostatic urethra; prominent in its midportion is the seminal colliculus. Synonym: crista phallica, crista urethralis masculinae. (05 Mar 2000) |
| crista pubica | The rough anterior border of the body of the pubis, continuous laterally with the pubic tubercle. Synonym: crista pubica. (05 Mar 2000) |
| crista quarta | A ridge that projects into the posterior end of the lateral saemicircular duct of the labyrinth. (05 Mar 2000) |
| crista sacralis | One of three rough irregular ridges on the posterior surface of the sacrum; median sacral crest; lateral sacral crests. Synonym: crista sacralis. (05 Mar 2000) |
| crista sacralis mediana | An unpaired crest formed by the fused spinous processes of the upper four sacral vertebrae. Synonym: crista sacralis mediana. (05 Mar 2000) |
| crista sphenoidalis | A vertical ridge in the midline of the anterior surface of the sphenoid bone that articulates with the perpendicular plate of the ethmoid bone. Synonym: crista sphenoidalis. (05 Mar 2000) |
| crista spiralis | The thickened periosteal lining of the bony cochlea forming the outer wall of the cochlear duct to which the basal lamina attaches. Synonym: crista spiralis, ligamentum spirale cochleae, spiral crest. (05 Mar 2000) |
| crista supracondylaris lateralis | The distal sharp portion of the lateral margin of the humerus. Synonym: crista supracondylaris lateralis, lateral epicondylar crest, lateral epicondylar ridge, lateral supracondylar crest. (05 Mar 2000) |
| crista supracondylaris medialis | The distal sharp portion of the medial margin of the humerus. Synonym: crista supracondylaris medialis, medial epicondylar crest, medial epicondylar ridge, medial supracondylar crest. (05 Mar 2000) |
| crista supramastoidea | The ridge that forms the posterior root of the zygomatic process of the temporal bone. Synonym: crista supramastoidea. (05 Mar 2000) |
| crista supraventricularis | The internal muscular ridge that separates the conus arteriosus from the remaining part of the cavity of the right ventricle of the heart. Synonym: crista supraventricularis. (05 Mar 2000) |
| crista terminalis | A vertical crest on the interior wall of the right atrium that lies to the right of the sinus of the vena cava and separates this from the remainder of the right atrium. Synonym: tenia terminalis, terminal crest. (05 Mar 2000) |