. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 202.—The development of the foramen Civininifrom the ossification of (Photo from a specimen in the Anatomical Collection): i, Foramenovale; 2, foramen Civinini. (Hartel.) II, No. 3). Occasionally the foramen ovale is not bony all the wayaround, and stands in open connection with the foramen spinosum. Fig. 203.—Sagittal section thro
. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 202.—The development of the foramen Civininifrom the ossification of (Photo from a specimen in the Anatomical Collection): i, Foramenovale; 2, foramen Civinini. (Hartel.) II, No. 3). Occasionally the foramen ovale is not bony all the wayaround, and stands in open connection with the foramen spinosum. Fig. 203.—Sagittal section through the foramen ovale. The section lies in a some-what obliquely placed vertical plane corresponding to the direction of the needle to reachthe ganglion: i, Imprcssio trigemini; 2, petrous lione; 3, carotid canal; 4, occipital bone; 5,great wing of sphenoid; 0, planum infratemporale; 7, needle in foramen ovale. (Hartel.) or lacerum or both (Table II, No, 3). On the other hand, a multipleforamen ovale, which Offerhaus found unusually frequent (5 percent.), we could not observe in any case, nor are any similar casesmentioned in the anatomic literature (Poirier, Testut). On the THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE 579 other hand, atypical venous emissaries (foramina innominata, venosa,Vesalii) are frequent in the neighborhood of the foramen ovale. The entrance to the foramen ovale is overhung on the anteriorend by the lamina lateralis of the pterygoid process; behind, by thespina angularis. In cases of strong development these ridges of boneare unite
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