seminal crest

crest (krest) a projection, or projecting structure or ridge, especially one surmounting a bone or its border.

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ampullar crest  the most prominent part of a localized thickening of the membrane lining the ampullae of the semicircular ducts.

frontal crest  a median ridge on the internal surface of the frontal bone.

iliac crest  the thickened, expanded upper border of the ilium.

intertrochanteric crest  a ridge on the posterior femur connecting the greater with the lesser trochanter.

lacrimal crest, anterior  the lateral margin of the groove on the posterior border of the frontal process of the maxilla.

lacrimal crest, posterior  a vertical ridge dividing the lateral or orbital surface of the lacrimal bone into two parts.

nasal crest 

1. (of maxilla) a ridge, raised along the medial border of the palatine process of the maxilla, with which the vomer articulates.

2. (of palatine) a thick ridge projecting superiorly from the horizontal plate of the palatine bone and articulating with the posterior part of the vomer.

neural crest  a cellular band dorsolateral to the embryonic neural tube that gives origin to the spinal ganglia and other structures.

occipital crest, external  a ridge sometimes extending on the external surface of the occipital bone from the external protuberance toward the foramen magnum.

occipital crest, internal  a median ridge on the internal surface of the occipital bone, extending from the midpoint of the cruciform eminence toward the foramen magnum.

palatine crest  a transverse ridge sometimes seen on the inferior surface of the horizontal plate of the palatine bone.

pubic crest  the thick, rough anterior border of the body of the pubic bone.

sacral crest  any of various ridges or tubercles on the dorsal surface of the sacrum, named for their location as median or as lateral or medial (relative to the dorsal sacral foramina); used alone it usually denotes the median sacral crest.

seminal crest  see under colliculus.

sphenoidal crest  a median ridge on the anterior surface of the body of the sphenoid bone, articulating with the ethmoid bone.

supramastoid crest  the superior border of the posterior root of the zygomatic process of the temporal bone.

supraventricular crest  a ridge on the inner wall of the right ventricle, marking off the conus arteriosus.

temporal crest of frontal bone  a ridge extending superiorly and posteriorly from the zygomatic process of the frontal bone.

turbinal crest 

1. (of maxilla) an oblique ridge on the maxilla, articulating with the nasal concha.

2. (of palatine bone) a horizontal ridge on the internal surface of the palatine bone.

urethral crest  a prominent longitudinal mucosal fold along the posterior wall of the female urethra, or a median elevation along the posterior wall of the male urethra between the prostatic sinuses.

crest of vestibule  a ridge between the spherical and elliptical recesses of the vestibule, dividing posteriorly to bound the cochlear recess.

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seminal crest,

a prominent portion of the urethral crest on which is the opening of the prostatic utricle and, on either side of it, the orifices of the ejaculatory ducts.