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प्रश्न
What is the purpose of making urine in the human body?
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उत्तर
To filter out nitrogenous waste products like urea and uric acid from the blood in humans.
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संबंधित प्रश्न
Explain the term haemodialysis.
What is the name of the tubes which connect the kidneys to bladder?
What is urethra?
In which of the following are the largest amounts of nitrogen excreted from a mammalian body?
(a) breath
(b) sweat
(c) urine
(d) faeces
The excretory unit in the human excretory system is called:
Choose the odd one out in the following series:
Proximal convoluted duct, loop of Henle, vein.
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
Differentiate between:
Renal cortex and Renal medulla.
The diagram below represents a mammalian kidney tubule (nephron) and its blood supply. Parts indicated by the guidelines 1 to 8 are as follows:
1. U-shaped loop of Henle
2. Proximal convoluted tubule with blood capillaries
3. Bowman’s capsule
4. Afferent arteriole from the renal artery
5. Glomerulus
6. Venule to the renal vein
7. Collecting tubule
8. Distal convoluted tubule with blood capillaries Study the diagram and answer the following questions in each case:
(i) Where does ultrafiltration take place?
(ii) Which structure contains the lowest concentration of urea?
(iii) Which structure contains the highest concentration of urea?
(iv) Which structure contains the lowest concentration of glucose?
(v) Where is the most water reabsorbed?
Write the functional activity of the following structure: Henle’s loop
