MICROANATOMY

Detailed explanation-1: -The correct option is B. Renal capsule. This is the tough outer covering and is fibrous in nature. The capsule is composed of tough fibres, chiefly collagen and elastin (fibrous proteins) that help to support the kidney and protect the vital tissue from injury.

Detailed explanation-2: -The kidney capsule consists of a layer of stromal cells surrounded by a sheet of connective tissue and is of major importance during kidney development and adult kidney homeostasis. During kidney development 3 different locations of stromal cells can be observed; capsular, cortical and medullary stromal cells.

Detailed explanation-3: -A special reticular basket-like system of connective tissue strips (called connective tissue skeleton-CTS) was found between the cortex and medulla in the kidney of various mammals. It enlarges the wall of the renal calyx (or pelvis) into the parenchyma. The main component of this system is collagen.