The renal capsule is a tough fibrous layer surrounding the kidney and covered in a thick layer of perinephric adipose tissue. It provides some protection from trauma and damage.The renal capsule relates to the other layers in the following manner (moving from innermost to outermost):renal medullarenal cortexrenal capsuleperinephric fat (or "perirenal fat")renal fasciaparanephric fat (or "pararenal fat")peritoneum (anteriorly), and transversalis fascia (posteriorly)
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