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प्रश्न
How does tubular secretion help in maintaining ionic and acid-base balance in body fluids?
उत्तर
During urine formation, the tubular cells secrete substances like H+, K+ and ammonia into the filtrate. Tubular secretion is also an important step in urine formation as it helps in the maintenance of the ionic and acid-base balance of body fluids.
- PCT helps to maintain the pH and ionic balance of the body fluids by selective secretion of hydrogen ions, ammonia and potassium ions into the filtrate
- DCT is also capable of selective secretion of hydrogen and potassium ions and NH3 to maintain the pH and sodium-potassium balance in the blood.
- The collecting duct also plays a role in the maintenance of pH and ionic balance of blood by the selective secretion of H+ and K+
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संबंधित प्रश्न
Fill in the blank :
The unit of human kidney is called .....................
Explain the terms ultrafiltration and selective absorption
Give Reasons for the following:
As a result of ultrafiltration along with excretory products certain useful products like glucose, salt, etc. are also filtered but these are not excreted?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Sometimes urine may contain certain excess vitamins.
When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?
What solute is normally present in the body to estimate GFR in humans?
Identify the biological term
Removal of useful substances from glomerular filtrate.
First step in urine formation is ______.
Minimum reabsorption occurs in ______.
What are the main processes of urine formation?
