Question 11 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.
Class - XI - Biology Chapter Excretory Products and their Elimination Page No. 301
Answers
1. Amphioxus
2. Bertini
3. Vasa rectae...
Hooe these helps :)
a) Amphioxus
b) Column of bertin
c) Vasa recta
Explanation:
a) Amphioxi is a marine animal which lives in the coastal waters. It belongs to the chordates. The excretory system of the amphioxi is divided into three parts named as flame cells, renal tube and renal glomerulus. The flame cells responsible for excretion and osmoregulation in these organisms.
b) Column of bertin is the structure found in the kidney. It is the extension of renal cortex. It allows the anchoring of the renal cortex. This structure consists of the blood vessels, and tubes. It aids in separation of the renal cortex with the renal pyramid.
c) The vasa recta is a kind of capillary network which aids in supply of blood to the medulla. This structure is highly permeable to the water and solutes. As becoming the part of the loop of Henle, the vasa recta forms the part of parallel set of loops within the medulla.
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