. Cunningham's Text-book of anatomy. Anatomy. 1264 THE UEINO-G-ENITAL SYSTEM. —--„_ Cortical substance of kidney The right and left colic arteries, or their branches, as they pass laterally to reach the colon, ai'e often related to the anterior aspects of the corresponding kidneys. The splenic vessels pass laterally in front of the left kidney (Fig. 979). The anterior surface of a kidney which has been hardened in situ is, like the posterior surface, not uniformly rounded, but marked by a series of impressions corresponding to the different structures which lie in contact with it. In the case
. Cunningham's Text-book of anatomy. Anatomy. 1264 THE UEINO-G-ENITAL SYSTEM. —--„_ Cortical substance of kidney The right and left colic arteries, or their branches, as they pass laterally to reach the colon, ai'e often related to the anterior aspects of the corresponding kidneys. The splenic vessels pass laterally in front of the left kidney (Fig. 979). The anterior surface of a kidney which has been hardened in situ is, like the posterior surface, not uniformly rounded, but marked by a series of impressions corresponding to the different structures which lie in contact with it. In the case of each kidney, the most prominent region on the anterior surface lies below the level of the middle of the kidney, and corresponds to the thickest part of the organ. From this promin- ence on the anterior surface a series of more or less flattened planes slope away to- wards the borders of the kidney. These flattened areas are the impressions formed by the viscera which lie on the anterior surface of the kidney. In the case of the right kidney, three impressions can usu- ally be distinguished on the anterior sur- face. One occupies the whole of the upper part of the organ, and is known as the impressio he- patica ; another stretches from the most prominent point to the inferior end of the kidney, and is related to the colon; while the third ex- tends along the medial margin, below the hilus, and is in The vessels and fat have been removed to give a view of the wall of the kidney contact with the sinus. The points where the vessels enter the kidney substance are seen as , j. ,, holes in the sinus wall. Second part 01 the duodenum (Fig. 979). The relative sizes of these three areas or impressions vary much in different specimens. On the left kidney, also, three more or less defined, flattened impressions slope towards the borders of the organ from the most prominent part of the anterior surface. One of these, on the superior and lateral part of the kidney, is the splenic imp
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