The correct option is D Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis.
Medulla
Inside the kidney, there are two zones, an outer cortex, and an inner medulla. The medulla is divided into a few conical masses (medullary pyramids) projecting into the calyces.
Cortex
The cortex extends in between the medullary pyramids as a renal column called Columns of Bertini.
Glomerulus
Glomerulus along with Bowman’s capsule is called the renal corpuscle or malpighian body.
Parts of kidney
The renal corpuscle, proximal convoluted tubule (PCT), and distal convoluted tubule (DCT) of the nephron are situated in the cortical region of the kidney whereas the loop of Henle extends into the medullary region.
Final answer
option(b) Inside the kidney the cortical region extends in between the medullary pyramids as the renal pelvis.