A manual of anatomy . idney. Eachorgan weighs about 6 to 7 grams and meas-ures 2 inches (5 cm.) in height, 1V2 inches (3.75 cm.) in width andabout yi to yi inch (6 to 12 mm.) in thickness. The right adrenal is triangular in outline and its base restsupon the superior extremity of the right kidney. Upon itsventral surface is seen a furrow, the hilus, at which the supra-renal vein emerges. The left adrenal is semilunar in shape and its base rests upon theupper part of the medial border and a part of the superior extremityof the kidney. Upon its ventral surface is seen the hilus. The adrenals are

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A manual of anatomy . idney. Eachorgan weighs about 6 to 7 grams and meas-ures 2 inches (5 cm.) in height, 1V2 inches (3.75 cm.) in width andabout yi to yi inch (6 to 12 mm.) in thickness. The right adrenal is triangular in outline and its base restsupon the superior extremity of the right kidney. Upon itsventral surface is seen a furrow, the hilus, at which the supra-renal vein emerges. The left adrenal is semilunar in shape and its base rests upon theupper part of the medial border and a part of the superior extremityof the kidney. Upon its ventral surface is seen the hilus. The adrenals are retroperitoneal. The arteries are the suprarenal arteries from the aorta, andbranches from the renal and inferior phrenic arteries. The rightsuprarenal vein empties into the inferior vena cava while the leftempties into the left renal vein. The nerves are derived from the suprarenal plexus and branchesfrom the solar and renal plexuses of the sympathetic system and fromthe greater splanchnic, vagal and phrenic nerves.. Fig. 250.— Dorsal view ofthe parathyrcoids and theneighboring organs. a, b, right superior and inferiorparathyrcoids, respectively. 340 THE DUCTLESS GLANDSCAROTID BODIES The intercarotid bodies {glomus caroticum) are two small bodiesstructures situated at the bifurcation of each common carotid artery.Each is about the size of a grain of wheat (3 mm. by i mm.). Eachis closely connected with the carotid sympathetics and is grayish-reddish brown, or yellowish in color. RiphiJIclreha./