. Cunningham's Text-book of anatomy. Anatomy. 634 THE NEKVOUS SYSTEM. backwards from the superior and posterior part ( the convexity) of the primitive cavity. Cornu Anterius.âThe anterior horn forms the foremost part of the cavity, and extends in a forward and lateral direction in the frontal lobe. When seen in frontal section (Fig. 562) it presents a triangular outline, the floor sloping upwards and laterally to meet the roof at an acute angle. It is bounded in front by the posterior surface of the genu of the corpus callosum ; the roof also is formed by the Corpus callosum Cavum septi pe
. Cunningham's Text-book of anatomy. Anatomy. 634 THE NEKVOUS SYSTEM. backwards from the superior and posterior part ( the convexity) of the primitive cavity. Cornu Anterius.âThe anterior horn forms the foremost part of the cavity, and extends in a forward and lateral direction in the frontal lobe. When seen in frontal section (Fig. 562) it presents a triangular outline, the floor sloping upwards and laterally to meet the roof at an acute angle. It is bounded in front by the posterior surface of the genu of the corpus callosum ; the roof also is formed by the Corpus callosum Cavum septi pellucidi : Foramen interventriculars : : ; Caudate nucleus Septum pellucidum : i ! j Thalamus â Vyâ^ : X^S^^^^^^L^ Chorioid plexus Corpus callosum turned to the left side Stria terminalis. Trigonum collateral Hippocampus Fimbria Occipital part of the radiation of the corpus callosum â¢Calcar;avis Bulb of the cornu Hippocampus Crus of the fornix Body of the fornix Fig. 563.âDissection, to show the fornix and lateral ventricles ; the body of the corpus callosum has been turned over to the left. corpus callosum. The medial wall, which is vertical, is formed by the septum pellucidum; whilst the sloping floor presents a marked elevation or bulging, viz. the smooth, rounded, and prominent extremity of the pear-shaped caudate nucleus. Pars Centralis.âThe pars centralis of the cavity is likewise roofed by the corpus callosum. On the medial side it is bounded by the posterior part of the septum pellucidum which attaches the fornix to the inferior surface of the corpus callosum. On the lateral side it is closed, as in the case of the anterior horn, by the meeting of the floor and the roof of the cavity. On the floor a number of important. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cunningham, D. J. (Daniel
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