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प्रश्न
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure contains the lowest concentration of urea?
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उत्तर
2/Efferent arteriole
संबंधित प्रश्न
Why is it necessary to excrete waste products?
The diagram given below is that of a structure present in a human kidney.
Study the same and answer the questions that follow:

1) Name the structure represented in the diagram
2) What is the liquid entering part ‘1’ called?
Name two substances present in this liquid that are reabsorbed in the tubule.
3) What is the fluid that comes to part ‘2’ called?
Name the main nitrogenous waste in it.
4) Mention the three main steps involved in the formation of the fluid mentioned in (iii) above
5) Name the substance which may be present in the fluid in part ‘2’ if a person suffers from Diabetes mellitus.
What is the role of glomerulus in the kidney?
Define excretion. Name the excretory unit of a kidney.
Define the following term:
Osmoregulation
Explain in your own words with suitable examples.
How does excretion occur in human beings?
Label the diagram given below :

Name the Following
The branch of renal artery which enters into Bowman’s capsule.
Give Technical Terms
The hormone that helps increase the reabsorption of water from the kidney tubules.
The number of ATP molecules required to produce one molecule of urea from the omithine cycle.
