. Cunningham's Text-book of anatomy. Anatomy. Anastomosing channel between sagittal sinus and primitive middle and posterior cerebral veins Primitive posterior cerebral vein Superior sagittal sinus. Ophthalmic vein Primitive anterior i [ cerebral vein ! Semilunar ganglion | Cavernous sinus Remains of lateral cerebral vein Primitive middle cerebral vein \ Otic vesicle Anterior cardinal vein Superior sagittal sinus Fig. 836.—Schema of the Development of the Primitive Cerebral Veins and the Cranial Blood Sinuses. Stage in. A, dorsal view ; B, side view. (After Mall, modified.) lateralis. It arise
. Cunningham's Text-book of anatomy. Anatomy. Anastomosing channel between sagittal sinus and primitive middle and posterior cerebral veins Primitive posterior cerebral vein Superior sagittal sinus. Ophthalmic vein Primitive anterior i [ cerebral vein ! Semilunar ganglion | Cavernous sinus Remains of lateral cerebral vein Primitive middle cerebral vein \ Otic vesicle Anterior cardinal vein Superior sagittal sinus Fig. 836.—Schema of the Development of the Primitive Cerebral Veins and the Cranial Blood Sinuses. Stage in. A, dorsal view ; B, side view. (After Mall, modified.) lateralis. It arises from the intra-cranial portion of the anterior cardinal vein, immediately caudal (posterior) to the semilunar ganglion of the trigeminal nerve; passes lateral to the otic vesicle, and leaves the cranium with the facial nerve. The caudal part of the intra-cranial portion of the anterior cardinal vein, which lies medial to the otic vesicle, then disappears. The part of the anterior cardinal vein which lies medial to the semilunar ganglion persists, and, up to the point where the vein from the optic vesicle joins it, it becomes the cavernous sinus. The remainder of the intra-cranial part of the anterior cardinal vein, which receives numerous tributaries from the cerebral hemisphere, then becomes the primitive anterior cerebral vein, and the vein from the optic vesicle becomes the ophthalmic vein. In the meantime, however, two outgrowths are projected dorsally from the vena capitis lateralis, one from its junction with the intra-cranial part, and the other from its junction with the extra-cranial part of the anterior cardinal vein. The anterior of the two lies anterior to the otic vesicle, and passes towards the cerebellar part of the hind-brain and is known as the primitive middle cerebral vein. The other lies posterior or caudal to the otic vesicle and passes towards the caudal part of the hind-brain ; it is called the primitive posterior cerebral vein. Subsequent to the form
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
