Mastering Urine Formation

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Questions and Answers

Which process is responsible for reabsorbing nearly 99% of the filtrate in the renal tubules?

  • Filtration
  • Reabsorption (correct)
  • Secretion
  • Excretion

Which substances are actively reabsorbed in the renal tubules?

  • Glucose (correct)
  • Nitrogenous wastes
  • Water
  • H+

Which substances are passively reabsorbed in the initial segments of the nephron?

  • Water (correct)
  • Glucose
  • Nitrogenous wastes
  • H+

Which process helps in the maintenance of ionic and acid-base balance of body fluids during urine formation?

<p>Secretion (A)</p> Signup and view all the answers

What percentage of the filtrate is reabsorbed by the renal tubules?

<p>99% (C)</p> Signup and view all the answers

Which cells in the nephron perform reabsorption?

<p>Epithelial cells (D)</p> Signup and view all the answers

Which substances are absorbed by passive transport in the renal tubules?

<p>Nitrogenous wastes (B)</p> Signup and view all the answers

Which substances are secreted into the filtrate during urine formation?

<p>K+ (A)</p> Signup and view all the answers

Which process is responsible for the release of urine from the body?

<p>Excretion (D)</p> Signup and view all the answers

What is the volume of urine released per day?

<p>1.5 litres (C)</p> Signup and view all the answers

Which process is the first step in urine formation?

<p>Filtration (A)</p> Signup and view all the answers

What is the average amount of blood filtered by the kidneys per minute?

<p>1100-1200 ml (D)</p> Signup and view all the answers

What are the three main processes involved in urine formation?

<p>Filtration, Reabsorption, and Secretion (C)</p> Signup and view all the answers

What is the term used to describe the filtration of blood through the glomerulus?

<p>Ultrafiltration (D)</p> Signup and view all the answers

What is the function of the juxta glomerular apparatus (JGA)?

<p>Regulation of glomerular filtration rate (C)</p> Signup and view all the answers

What is the approximate glomerular filtration rate (GFR) in a healthy individual per minute?

<p>125 ml (A)</p> Signup and view all the answers

Which cells in the juxta glomerular apparatus (JGA) release renin to regulate GFR?

<p>JG cells (B)</p> Signup and view all the answers

What is the term used to describe the minute spaces in the epithelial cells of Bowman’s capsule?

<p>Filtration slits (D)</p> Signup and view all the answers

What is the term used to describe the amount of filtrate formed by the kidneys per minute?

<p>GFR (A)</p> Signup and view all the answers

What is the main constituent of the filtrate formed during glomerular filtration?

<p>Plasma (B)</p> Signup and view all the answers

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