On the distribution of the different arteries supplying the human brain / Charles E. Beevor.

  • Beevor, Charles E.
Date:
1908
Catalogue details

Licence: Public Domain Mark

Credit: On the distribution of the different arteries supplying the human brain / Charles E. Beevor. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    artery and the injected nucleus often stood out as an island in the rest of this part of the thalamus (Plate 6, fig. 11). In seven cases, where the Posterior communicating was the only artery ligatured, this nucleus was not injected and was presumably supplied by this artery, and in one case it was injected when this artery was separately injected. In the one case (Class C) where the Anterior choroid was alone ligatured, the anterior nucleus was not injected, and in one case it was not injected where both Posterior communicating and Anterior choroid were ligatured. The External nucleus lying on the outer side of the anterior nucleus has a different supply in its various parts. Its most anterior superior part was in eight cases supplied by the Posterior cerebral artery, in two cases it was supplied by the Posterior communicating, and in three cases it was not injected, when this artery was the only one cut out. The anterior external part which receives the main part of the anterior peduncle from the anterior division of the internal capsule was supplied by the Posterior cerebral in three cases, by the Posterior communicating in four cases, and it was not injected in 11 cases where the Posterior communicating artery was alone', cut out, and not injected in three cases where in addition the Anterior choroid was ligatured. Besides these, three cases Avere noted in which the anterior half of the Thalamus was not injected when the Posterior communicating artery was alone cut out, and in three others it was uninfected, when in addition the Anterior choroid was ligatured ; also in one case the anterior half of the Thalamus was injected by the Posterior communicating artery. The posterior half of the external nucleus was supplied by the Posterior cerebral artery in all cases, with the exception of one case where the posterior superior part was injected by the Anterior choroid artery, and in another where a vertical figure-of-eight-shaped area in the middle of the external nucleus was not injected when the Posterior communicating was alone cut out. It seems probable that the superior external part of the Optic thalamus containing the posterior half of the external nucleus is the part supplied by the Posterior cerebral artery through the choroid membrane,—which here gives off numerous branches which sink into the Thalamus,—because, in one case (Class K) where the Posterior cerebral artery was ligatured in the calcarine fissure near the anterior apex of the cuneus, and only the Anterior and Middle cerebrals were injected, this nucleus was the only part of the Optic thalamus which was injected. It was injected with carmine from the Middle cerebral artery, presumably through the Anterior choroid artery, which had injected with carmine the whole of the choroid membrane and plexus. The Internal nucleus was observed in 10 cases to be supplied entirely by the Posterior cerebral artery. In nine cases it was found to be supplied by this artery in the posterior half only ; the anterior half in these cases was not injected and was presumably supplied by the Posterior communicating artery, which was the only one which was cut out. In one case where the Posterior communicating artery was separately injected, it supplied the anterior part of this nucleus. (Plates G and 7, figs. 11, 12, and 13.) VOL. CC.—B. E