| OCR Text |
Show 3.ri8 MR. E. E. BEDDARD ox THE [Feb. 16, to the fat-body. The accompanying adrenal portal is formed by the union of two trunks which spring from the left of the middle line. Text-fig. 73. Left testis of Ophiophagus and blood-supply. Letters as in text-fig-. 72. Renal Arteries.-The anterior kidney receives altogether seven branches from the aorta, of which, however, the first two arise in common with other arteries and are therefore practically branches of them. I have already referred to them as branches of the spermatic artery and of the inferior mesenteric. The third artery gives off, at about the middle of the diameter of the kidney, a branch to the fat-body ; it also emits a very slender branch to the intestine. The third artery has also a fine intestinal branch. Whether the four remaining arteries have or have not such a branch, I a m unable to say. The posterior kidney has fewTer arteries. There are only four of them, of which the last bifurcates a little after its origin from the aorta and arrives at the kidney as two arteries. The first renal artery arises between the posterior spermatic artery and the fourth renal artery of the left kidney. The last renal artery arises just behind the first of the intestinal arteries. The ureter of the anterior kidney, at any rate, derives some blood-supply from branches of the intestinal arteries. Epigastric Artery.-This artery runs along the median ventral line of the body-wall, in close association with the anterior abdominal vein. The close relationship of the two is shown by the fact that they are both encircled by the same periangious lymphatic vessel. Their branches, moreover, often coincide, and they too are apt to be ensheathed in a common lymphatic trunk. The epigastric artery is continuous from one end of the body to the other, and receives its blood-supplies, as it appears, from any arteries that happen to be adjacent. Thus in the neck the carotid artery sends branches thereto, while in the region of the fat-body the longitudinal artery of that organ sends twigs to the epigastric. |
