Home
Class 11
BIOLOGY
Counter-current mechanism helps to maint...

Counter-current mechanism helps to maintain a concentration gradient in the medullary interstitium. Presence of such interstitial gradient helps in an easy passage of water from the

A

Vasa recta

B

Henle’s loop

C

Collecting tubuleÂ

D

DCTÂ

Text Solution

Verified by Experts

The correct Answer is:
C

 Counter -cunent mechanism helps to maintain a concentration gradient in the medullary interstitium. Presence of such interstitial gradient helps in an easy passage of water from the collecting tubule.Â
Promotional Banner

Topper's Solved these Questions

  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    A2Z|Exercise Section A : Topicwise Questions Topic 4 : Regulation Of Kidney Function|16 Videos
  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    A2Z|Exercise Section A : Topicwise Questions Topic 5 : Micturition And Role Of Other Organs In Excretion|36 Videos
  • EXCRETORY PRODUCTS AND THEIR ELIMINATION

    A2Z|Exercise Section C: Previous Years' Examination Questions (NEET/AIPMT Questions)|88 Videos
  • Digestion and Absorption

    A2Z|Exercise Section D : Chapter-end Test|50 Videos
  • LOCOMOTION AND MOVEMENT

    A2Z|Exercise Section D : Chapter-end Test|50 Videos

Similar Questions

Explore conceptually related problems

The counter current mechanism helps to maintain a concentration gradient. This gradient helps in -

Mention the substances that exit from the tubules in order to maintain a concentration gradient in the medullary interstitium.

Name the two osmolytes which maintain the osmolarity gradient in the medullary interstitium.

The counter current mechanism involves the transport of …….....to maintain the concentration of……...in medullary interstitium.

Which set of ions/solutes is responsible for maintaining the gradient of the medullary interstitium?

counter current mechanism between loop of Henle and Vasa recta result in reabsorption of water from

Assertion :- Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed. Reason :- Counter current mechanism helps to maintain a concentration gradient in the medullary interstitium.

Read the following statements about the excretory system in humans: I. A fall in GFR can activate the JG cells to release renin. II. ADH can also affect the kidney function by its constrictory effects on blood vessels. III. The proximity between the Henle's loop and vasa recta, as well as the counter-current in them help in maintaining an increasing osmolarity towards the outer medullary interstitium. IV Our lungs remove large amounts of CO_(2) (108 litres/day). V. Renal calculi are the stone or insoluble mass of crystallised salts like oxalates within the kidney. How many of these are correct?

Which of the following cells helps in maintaining the pressure gradient in the sieve tubes?

____ helps in the easy passage of food from oesophagus to stomach.

A2Z-EXCRETORY PRODUCTS AND THEIR ELIMINATION-Section A : Topicwise Questions Topic 3 : Function Of The Tubules And Mechanism Of Concentration Of
  1. The osmotic gradient between the cortex and medulla is created by

    Text Solution

    |

  2. Fill in the blanks: a. Ascending limb of Henle’s loop ...(1)....

    Text Solution

    |

  3. Counter-current mechanism helps to maintain a concentration gradient i...

    Text Solution

    |

  4. Human kidneys can produce urine nearly concentrated than the initial f...

    Text Solution

    |

  5. Reabsorption of useful substances from glomerular filtrate occurs in

    Text Solution

    |

  6. Under normal conditions which one is completely reabsorbed in the rena...

    Text Solution

    |

  7. Which of the following is totally reabsorbed in renal tubes ?

    Text Solution

    |

  8. Reabsorption of water in PCT part of nephron is

    Text Solution

    |

  9. Distal convoluted tubule is lined with

    Text Solution

    |

  10. In nephron, water absorption is maximum in

    Text Solution

    |

  11. What is permeable for ascending loop of Henle ?

    Text Solution

    |

  12. Part of nephron involved in active reabsorption of sodium is

    Text Solution

    |

  13. Main function of loop of Henle is

    Text Solution

    |

  14. If Henle's loop were absent from mammalian nephron which of the follow...

    Text Solution

    |

  15. Absorption of major part of Na^(+) and K^(+) ions occurs in

    Text Solution

    |

  16. Loop of Henle is connected with

    Text Solution

    |

  17.  Recognise the figure and find out the correct matching

    Text Solution

    |

  18. Excretion of dilute urine is due to

    Text Solution

    |

  19. We can produce concentrated? Dilute urine. This is facilitated by a sp...

    Text Solution

    |

  20. Formation of hypertonic urine is mediated through

    Text Solution

    |