Q46 / 157 · NTA Abhyas (NEET) 2020 · Zoology · Excretory Products and their Elimination

Which one of the following statement is not correct for most common type of nephrons of human kidney?

  • Correct answer
    A
    They are small size, less coiled with major part present at the junction of cortex and medulla.
  • B
    They have short length of loop of Henle.
  • C
    They do not have major role to form Counter current mechanism.
  • D
    They have no or highly reduced Vasa recta.

Solution

The human kidney has about 85% cortical nephrons and about 15% juxta-medullary nephrons. The cortical nephrons are highly coiled structures with major parts present in the cortex region. Juxta-medullary nephrons have a long loop of Henle which runs deep in the medulla, well developed Vasa recta, and are mainly activated during a shortage of water.

Hence, the correct answer is option: 'A'.

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