zygomatic f. internal iliac f

The anterior portion of the internal surface of the ilium occupied largely by the iliacus muscle, ischiorectal f. Syn.: excavatio ischiorectalis. The space between the obturator fascia, gluteus maximus muscle and the great sacrosciatic ligament, and the recto vesical fascia, jugular f. A deep, smooth depre ion in the petrous portion of the temporal bone, anterior to the jugular facet. It forms with the jugular notch of the occipital bone the jugular foramen, lacrimal f. A slight depre ion in the upper and outer part of the root of the orbit, just beneath and behind the superior orbital margin, in which lies the lacrimal gland, lenticular f. An indentation or depre ion in the anterior surface of the vitreous formed by the membrana hyaloidea, for the reception of the crystalline lens.