Short notes on the cortical structure of human kidney
The Cortex is granular in appearance because of the presence of convoluted uriniferous tubules. The cortex overlies the bases of the medullary apices called medullary pyramids. The cortex is also present between the medullary pyramids.
Under a magnifying glass the cortex can be seen divided into alternating radial tracks known as rays and labyrinths. The rays are radially straight because they contain the straight parts of the uriniferous tubules. The Labyrinths have a granular appearance because the tubules are cut irregularly.