Question

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.

Answer 1

(a) Flame cell is a type of excretory and osmoregulatory system. Examples of chordate animal having flame cells as excretory structures are Amphioxus, Flatworms, etc.

(b) The cortical portions projecting between the medullary pyramids in the human kidney are the columns of Bertini. They represent the cortical tissues present within the medulla.

(c) A loop of capillary that runs parallel to Henle’s loop is known as vasa rectae. Vasa rectae, along with Henle’s loop, maintain a concentration gradient in the medullary interstitium.