URINARY ORGANS OF THE PIG 481 



THE ADRENAL BODIES 



The right adrenal lies against the inner part of the anterior pole of the right 

 kidney. When hardened in situ it is pyramidal in form. Its inner surface is 

 flattened and is in contact with the right crus of the diaphragm. The outer sur- 

 face is convex and lies in the renal impression of the liver. The ventral surface is 

 grooved for the posterior vena cava; on this surface a relatively large vein emerges 

 near the apex. The base is concave and rests obliquely against the anterior pole 

 of the kidney. The apex fits into the angle between the posterior vena cava and 

 the dorsal border of the liver. 



The left adrenal lies on the inner face of the posterior vena cava just behind 

 the anterior mesenteric artery, and is therefore practically median in position. 

 It is flattened, and irregularly triangular or heart-shaped in outline. Its left face 



Posterior pole 



Groove for vena cava 



Anterior pole 



Anterior pole 



Fig. 386. — Left Adrenal op Ox, Ventral View: Fig. .387. — Right Adrenal of Ox, Ventral View: 

 Hardened in situ. Hardened in situ. 



is related to the dorsal sac of the rumen. Its right face is related to the vena cava, 

 and presents a large emergent vein. The posterior border or base is deeply notched. 



It i.s interesting to note that the left adrenal does not migrate with the kidney, but retains 

 its primitive position; it lies usually about two inches (ca. .5 cm.) in front of a transverse plane 

 through the anterior pole of the left kidney. 



The adrenals of the sheep are both bean-shaped. The right one lies along 

 the anterior part of the inner border of the kidney, at the angle of the junction of 

 the right renal vein and the posterior vena cava. It is a little over an inch (ca, 

 3 cm.) long, and about an inch (ca. 12 to 15 mm.) wide. The left adrenal is longer, 

 flatter, and somewhat bent. It lies across the left renal vein, to which it is attached, 

 but is not in contact with the kidney. 



URINARY ORGANS OF THE PIG 



The kidneys are smooth and bean-shaped; they are more flattened dorso- 

 ventrally, more elongated, and smaller at the extremities than those of the dog. 

 The length is about twice the width. They are usually almost symmetrically placed 

 31 



