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The renal fascia is a dense, elastic connective tissue envelope enclosing the kidney and adrenal gland, together with the layer of perirenal fat surrounding these two. [1]The renal fascia separates the adipose capsule of kidney from the overlying pararenal fat.
Sagittal section through posterior abdominal wall, showing the relations of the capsule of the kidney (pararenal fat labeled as paranephric body center left) Perirenal space. It is also called the perinephric space. Bounded by the anterior and posterior leaves of the renal fascia. It contains the following structures: Adrenal gland; Kidney ...
The medial border of the kidney is concave in the center and convex toward either extremity; it is directed forward and a little downward. Its central part presents a deep longitudinal fissure, bounded by prominent overhanging anterior and posterior lips. This fissure is a hilum that transmits the vessels, nerves, and ureter.
A recessed area on the concave border is the renal hilum, where the renal artery enters the kidney and the renal vein and ureter leave. The kidney is surrounded by tough fibrous tissue, the renal capsule , which is itself surrounded by perirenal fat , renal fascia , and pararenal fat .
In mammals, the kidneys are usually bean-shaped [58] and located retroperitoneally [59] on the dorsal (posterior) wall of the body. [60] The outer layer of each kidney is made up of a fibrous sheath called the renal capsule. The peripheral layer of the kidney is called the cortex and the inner part is called the medulla. The medulla consists of ...
The venous drainage of the kidney large mirrors its arterial supply, except that there are no segmental veins. [4] The stellate veins arise from the capillaries, then drain successively through interlobular veins and interlobar veins until these converge from across the kidney to form the renal vein for that kidney.
Blood enters the kidney through the renal artery, [55] which in the multilobar kidney branches in the area of the renal pelvis into large interlobar arteries that pass through the renal columns. [ 10 ] [ 109 ] The interlobar arteries branch at the base of the pyramid, giving rise to arcuate arteries , from which the interlobular arteries extend ...
The anatomical relations of the two renal veins are bilaterally asymmetrical. Left renal vein The left renal vein is situated posterior to the splenic vein , and the body of the pancreas . [ 1 ]