Plate I

Grafik

From this Plate much of the general Anatomy and subdivisions of the Brain may be learnt. It represents the scull-cap taken off. On the left side, the Dura Mater investing the Brain; while the right hemisphere of the Cerebrum is seen covered only by the Vascular Pia Mater. The hemispheres, which are naturally divided by the Falx, are here separated a little, so as to enable us to look down upon the Corpus Callosum, and see the branches of the Anterior Artery of the Cerebrum, and the Artery of the Corpus Callosum. a. The cut edge of the bone and the Frontal Sinuses. b. The Integuments of the head hanging down. c. The outer surface of the Dura Mater, which adhered by membraneous filaments and communication of vessels to the bone, investing, supporting, and protecting the Brain, and guarding against the ready communication of disease to the more delicate Pia Mater. d. The inner surface of the Dura Mater, which covered the right hemisphere of the Cerebrum, cut in the direction of the edge of the scull, and folded over upon the left side. e. The Anterior Branch of the Meningeal Artery1. f. The Posterior Branch of the Meningeal Artery. g. g. The Meningeal Veins2. These run on both sides of the branches of the Arteries, and parallel with them in all their extent, and in general, upon tearing up the Cranium, they mark sufficiently from their plenitude tbe state of the Brain, frequently deluging the whole surface of the Dura Mater with their blood. h. i. k. The Right hemisphere of the Cerebrum, which is again subdivided into h, the Anterior Lobe of the Cerebrum, i. the Middle Lobe, k. the Posterior Lobe, which divisions seem arbitrary in this view of the Brain; but upon turning the base of the Encephalon up, as in Plate XL we then see the meaning of these divisions. Haller, however, rather chooses to say, the frontal, the parietal, and occipital regions. We observe also here the convolutions of the Brain, into the interstices of which the Pia Mater dips to supply the deeper parts, as will be seen more particularly in the next Plate. l. The Corpus Callosum3, which from its deep situation is seen here but indistinctly. m. The Anterior Artery of the Cerebrum4. Tt is seen to give off the Arteria Corporis Callosi, while the continued trunk, lying on the flat surface of the hemisphere, and hanging over the Artery of the Corpus Callosum, sends its branches arching over the acute margin of the hemisphere, and is beautifully distributed in the Pia Mater. n. The Artery of the Corpus Callosum. o. o. Branches of the middle and posterior Arteries of the Cere- brum, which lie betwixt the convolutions of the Cerebrum; but which, when they emerge upon the surface, do not lie in the interstices of the convolutions. This we shall the less won- der at, when we recollect that these convolutions cannot, while retained within the scull, have that convexity which their elas- ticity enables them to assume when the Cranium is opened. p. Some of the larger veins, which, gathering the blood from the ex- tremities of these Arteries, go to empty themselves into the great longitudinal Sinus. The smooth internal surface of the Dura Mater lies in contact with the Tunica Arachnoides6, but with- out adhesion to it, except at the point where those veins enter the Sinus. There the connection is strengthened by an adhe- sion of the Pia Mater to the Dura Mater. This adhesion is of a peculiar kind, by means of little bodies like the cotilidons of the uterine system of animals. The course of the great longitudinal Sinus will be well understood by turning to Plate X. of this Fasciculus.

Object Details

• Language: Englisch
• Location: Universitätsbibliothek Heidelberg
• Inventory number: P 1242-4 Folio RES
• Collection: UB Anatomische Illustrationen

Classification and Topics

• Subject (what): Anatomie ; Gehirn ; Illustration
• Subject (who): Bell, Charles (Thematisierte Person/Körperschaft (GND))
• Classification: Stich (Gattung)

Contributors, Location and Time

• Event: Herstellung
• (who): Bell, Charles (Zeichner/Zeichnerin) ; Medland, Thomas (Kupferstecher/Kupferstecherin)
• (where): London
• (when): um 1802
• Event: Veröffentlichung
• (who): Longman
• (when): 1802
• Event: Veröffentlichung
• (where): London

Further information

• Last update: 06.03.2023, 9:55 AM CET