Question

A) 1.Draw internal structure of a kidney and answer the following
questions.
2. Why does medulla has a striped
appearance?
3. What is the fluid that passes Down
ureters. Name the main nitrogenous
waste present in it.
4. Mention the structural and
function unit of Kidneys
5. Name the two major steps in the
formation of fluids mentioned in​

Answer 1

Answer:

Draw internal structure of a kidney and answer the following

2The medulla consists of a number of medullary pyramids, named because of their triangular shape. These are striped in appearance because they contain microscopic coiled tubes called nephrons, the functional unit of the kidney . ... This acts like a funnel draining the urine out of the kidney into the ureter.

iii). The fluid that passes down through the ureter is the urine. The main nitrogenous waste present in it is urea. Urea is formed as a result of breakdown of proteins by the liver.

4 Nephrons are the structural and functional units of the kidney. They are involved in three very important functions which are – Glomerular Filtration, Tubular reabsorption, Tubular secretion. ... Ureter – It is also a part of the excretory system and it carries urine from the kidney to the urinary bladder.

5 The main steps involved in urine formation are Blood Filtration, Reabsoption and Secretion

Explanation:

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Answer 2

Answer:

A)

2. Medulla have stripped appearance due to the presence of loop of Henle and collecting duct.

3. The fluid that passes down the ureter is urine and the nitrogenous waste present in that are urea and uric acid.

4. The structural and functional unit of kidneys are the Nephrons.

5. The major steps involved in the formation of urine are:-

• Glomerular Filtration
• Selective Reabsorption
• Tubular secretion.