_1_, Cortical substance; _2_, medullary substance; _3_, renal crest;
_4_, renal pelvis; _5_, ureter. (From Leisering’s Atlas, reduced.)
]
When the rumen is full, the left kidney (which is attached by a short
mesentery) usually lies entirely to the right of the median plane,
under the third, fourth, and fifth lumbar transverse processes. The
primitive dorsal surface has become ventro-medial, and is somewhat
flattened by contact with the rumen.
The =ureters= are, in general, like those of the horse, except in regard
to the first part of the left one, which has a peculiar course, in
conformity with the remarkable position of the kidney. It begins at the
ventral part of the hilus (which faces toward the right), curves upward
and inward over the outer aspect of the kidney to its dorsal surface,
crosses the median plane, and runs backward on the left side.
The =bladder= is longer and narrower than that of the horse, and extends
further forward on the abdominal floor. The peritoneal coat extends
backward further than in the horse.