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प्रश्न
We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.
विकल्प
Reabsorption from PCT
Reabsorption from Collecting Duct
Reabsorption/Secretion in DCT
Counter current mechanism in Henle’s loop/Vasa recta
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उत्तर
Counter current mechanism in Henle’s loop/Vasa recta
Explanation:
Counter current mechanism operates between the two limbs of the loop of Henle and those of vasa recta. The filtrate becomes concentrated when it moves down the descending limb but is diluted by the ascending limb.
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संबंधित प्रश्न
Put a tick mark (✓) against the most appropriate alternative in the following statement :
The kidneys are made up of tiny tubular units called :
Find the odd one out. Give a reason for your choice.
ureter, kidney, urinary bladder, lung, urethra
Why is excretion necessary? Name the common excretory substance in our body.
Choose the odd one out in the following series:
Kidney, ureter, heart
Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:
Name the parts numbered 1 to 5.
Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:
Name the structural and functional unit of the part marked '1'.
Draw a neat and well labeled diagram of human excretory system.
Name the Following
The gas excreted by the lungs.
Give Technical Term:
The nitrogenous wastes produced in man.
Choose the Odd One Out:
Circle the odd one.
Where does facultative reabsorption of sodium ions and water take place?
In cases of dehydration, the JG cells will release ______.
The collecting tubule of the kidney is important as it helps in ______.
Match the parts of the nephron in column I with their function in column II.
| Column I | Column II | ||
| (a) | Loop of Henle | (i) | Ultrafiltration |
| (b) | Proximal convoluted tubule | (ii) | Secretion of hydrogen ions |
| (c) | Distal convoluted tubule | (iii) | Reabsorption of glucose |
| (d) | Bowman's capsule | (iv) | Concentration of urine |
The filtration units of kidneys are called ____________.
Analogy:
Neurons: Nervous system.
Nephrons: ______.
Kidneys are reddish brown and
Show the structure of a renal corpuscle with the help of a diagram.
The double walls of Bowman’s capsule are composed of ______ epithelium.
