Atlas and text-book of topographic and applied anatomy / by Oskar Schultze ; edited with additions by George D. Stewart.

  • Schultze, Oskar, 1859-1920.
Date:
[1905], ©1905
Catalogue details

Licence: Public Domain Mark

Credit: Atlas and text-book of topographic and applied anatomy / by Oskar Schultze ; edited with additions by George D. Stewart. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    vertebral canal through the intervertebral foramina, meningeal branches to the dura mater in the posterior cerebral fossa, and the anterior and posterior spinal branches to the spinal cord and its membranes. The internal carotid arterj- suppHes the brain with: 1. The anterior cerebral artery. It passes inward over the dorsal surface of the corresponding optic nerve and then forward, approaching the artery of the opposite side, with which it is con- nected by the anterior communicating artery. The vessels winding around the genu of the corpus callosum pass backward, supplying the corpus callosum, and ramify upon the median surface of the cerebral hemispheres. 2. The middle cerebral artery, which runs in the fissure of Sj-lvius, supplying the frontal, parietal, and temporal lobes as well as the island of Reil. 3. The anterior choroid artery, passing posteriorly along the optic tract to the descending horn of the lateral ventricle to enter the choroid plexus. 4. The posterior communicating artery, which has been previously mentioned. CRANIOCEREBRAL TOPOGRAPHY. The tentorium cerebelli (see Figs. 2, 9, 17, and Plate 4) divides the cranial cavitv into two closed spaces which communicate with each other through the incisura tentorii. The larger anterior space includes the anterior and middle cranial fossas and lodges the cerebrum; the small posterior space—the posterior cranial fossa—contains the cerebellum, the pons, and the medulla. A frontal section through the back part of the head, posterior to the incisura tentorii (see Fig. 12), reveals four separate compartments having apparently no connection with each other, since the falx cerebri, the falx cerebelli, and the tentorium form a cross-like partition which separates the hemispheres of the cerebrum and cerebellum. The plane of such a cross- section will be better understood after a study of other illustrations (Fig. 9, Plate 4). The following relations will be made more clear to the mind of the reader by looking at the base of a skull (see Fig. 9 and Plate i). The anterior cranial jossa lodges the frontal lobes of the cerebrum; the marked develop- ment of the juga (ridges) cerebralia and of the impressiones digitate on the tliin orbital plate of the frontal bone are due to the orbital sulci and gyri respectively. In the median line the olfactory bulb rests upon the cribriform plate of the ethmoid and gives off the olfactory filaments to the nasal cavity. The middle cranial fossa contains the temporal lobes. Its posterior and lateral portion bears an important relation to the roof of the middle ear (tegmen tympani). This is the situation at which abscesses develop in the temporal lobes as the result of suppurations in the middle ear. Another important situation in the middle cranial fossa is located anterioriy near the median line, where the large semilunar ganghon is found with its three main divisions (see page 32). The pos- terior border of the lesser wing of the sphenoid corresponds to the deep fissure of Sylvius situated between the frontal and temporal lobes. The optic chiasm, giving off the optic nerves, is situated anteriorly in the narrow median portion of the middle cranial fossa. Further posteriorly, the hypophysis cerebri is imbedded in the sella turcica.