Name the following: (a) A chordate animal having flame cells as excretory structures (b) Cortical portions projecting between the medullary pyramids in the human kidney (c) A loop of capillary running parallel to the Henle’s loop.
A. Amphioxus is an example of a chordate that has flame cells as excretory structures. Flame cell is a type of excretory and osmoregulatory system. B. The cortical portions projecting between the medullary pyramids in human kidney are known as Columns of bertini. They represent the cortical portion between medulla. C. Vasa recta is a loop of capillary running parallel to henles loop. They together help in maintaining the osmotic gradient in the kidney.
