State board questions and answers / by R. Max Goepp.
- Goepp, R. Max (Rudolph Max), 1866-1950
- Date:
- 1911
Licence: Public Domain Mark
Credit: State board questions and answers / by R. Max Goepp. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![Describe the hemispheres and lobes of the brain. The cerebral hemispheres are ovoid, convex on their superior and lateral surfaces, partially separated from each other by the longitudinal fissure, but connected by the corpus callosum. Each hemisphere has five lobes and eight fissures. The frontal lobe is bounded internally by the longitudinal fissure, below by the Sylvian, and posteriorly by the Rolandic fissure. The parietal lobe extends from the longitudinal fissure downward to the fissure of Sylvius, and anteroposte- riorly, from the fissure of Rolando to the parieto-occipital fissure; the occipital lobe lies behind the parieto-occipital fissure; the temporosphe- noidal occupies the middle fossa of the skull and is bounded in front by the fissure of Sylvius; the central lobe, or island of Reil, lies in the fissure of Sylvius, covered by the frontal and temporosphenoidal lobes. Name the principal lobes of the brain and the fissures dividing them. Frontal, parietal, temporosphenoid, occipital, and central (island of Reil). The fissure of Rolando separates the frontal from the parietal; the fissure of Sylvius separates the frontal and parietal from the temporosphenoidal lobe; the parieto-occipital fissure separates the parietal from the occipital; and the central lobe lies in the fissure of Sylvius, at the base of the brain. Give a method by which the fissures of Sylvius and Rolando may be approximately mapped out on the surface of the skull. Fissure 0] Sylvius: Draw a line from a point i\ inches horizontally behind the external angular process of the frontal bone to a point f inch below the parietal eminence. Fissure of Rolando: From a point \ inch behind the midpoint of a line connecting the glabella and the external occipital protuberance draw a line 3f inches in length, over the side of the head at an angle of 670 with the median line. Where is the fissure of Sylvius and what artery does it contain? The fissure separates the frontal and parietal lobes from the temporal; it begins at the anterior perforated space and passes outward and upward to the external surface of the hemisphere. It lodges the middle cerebral artery. In the anatomy of the brain what is the corpus callosum? Describe its connections? It is a thick, arched layer of transverse fibers at the bottom of the longi- tudinal fissure; anteriorly, it curves upon itself and gives off two peduncles at the entrance of the Sylvian fissure; posteriorly, it is continuous with the fornix. It forms the roof of the lateral ventricles. A median depression on its upper surface is called the raphe, parallel to which, on each side, run two or more elevated bands, the stria, longitudinales (nerves of Lancisi). Locate the fourth ventricle of the brain. It is the space between the posterior surface of the medulla and pons in front, and the cerebellum behind. Lateral boundaries: superior, middle, and inferior peduncles of cerebellum.](https://iiif.wellcomecollection.org/image/b21173709_0146.jp2/full/800%2C/0/default.jpg)
