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    Top 5 NEET Chemistry Chapters to Score 55+ Marks

    Ultrafiltration MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

    Quick Facts

    • 11 Questions around this concept.

    Solve by difficulty

    Which is the first step of urine formation ? 

    Ponds or Grasslands are some examples of 

    Which one of the following correctly explains the function of a specific part of a human nephron?

    Concepts Covered - 1

    Urine Formation: Glomerular Filtration or Ultrafiltration
    • Kidneys filter 1100-1200 ml of blood per minute. 
    • The blood pressure in the capillaries of the glomerulus is higher than that of the afferent arteriole due to their narrow lumen.
    • This increased blood pressure results in the filtration of the blood across the semipermeable capillaries called ultrafiltration.
    • Water and many dissolved substances are filtered into the lumen of the Bowman’s capsule.
    • Blood cells and proteins are kept within the bloodstream by the filtration membrane.
    • The filtered components in the lumen of the Bowman’s capsule are collectively called the glomerular filtrate.
    • It consists of a large amount of water, urea, uric acid, creatinine, amino acids, glucose, sodium, potassium, vitamins, etc. 
    • If blood pressure increases, the stretch receptors on the afferent arteriole send an impulse to the smooth muscle cells.
    • These smooth muscle cells will contract and the diameter of the afferent arteriole is reduced, which in turn restricts the flow of blood.
    • The restricted flow of blood to the glomerulus reduces the rate of glomerular filtration. 
       

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    Urine Formation: Glomerular Filtration or Ultrafiltration

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