ANATOMY

Detailed explanation-1: -The cortex extends in between the medullary pyramids as renal columns called Columns of Bertin.

Detailed explanation-2: -The renal columns are connective tissue extensions that radiate downward from the cortex through the medulla to separate the most characteristic features of the medulla, the renal pyramids and renal papillae.

Detailed explanation-3: -C. Columns of Bertini are the extensions of the renal cortex into the renal medulla between the renal pyramids.

Detailed explanation-4: -Answer and Explanation: The tissue between the renal pyramids is called the renal column. The renal column is an extension of a medullary region that contains blood vessels and connective tissues.

Detailed explanation-5: -These renal recesses are separated by interlobar artery branches of the renal artery.