Advertisements
Advertisements
प्रश्न
How does tubular secretion help in maintaining ionic and acid-base balance in body fluids?
Advertisements
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+
APPEARS IN
संबंधित प्रश्न
Reabsorption of water from distal parts of the tubules is facilitated by hormone ______.
Dialysis fluid contains all the constituents as in plasma except ______.
Put a tick mark (✓) against the most appropriate alternative in the following statement :
Filtration of excretory wastes from the blood occurs in:
Fill in the blank :
The unit of human kidney is called .....................
State if the following statement is true or false. Correct the statement if it is false.
The Bowman’s capsule and glomerulus together form the Malpighian body.
One of the following sets of body parts or substances or processed, pick out the one item which overall includes the remaining foir.
ADH, Water, pituitary, osmoregulation, urine
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?
What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?
What solute is normally present in the body to estimate GFR in humans?
Glomerular filtrate contains ______.
Identify the biological term
Each contains a glomerulus.
Identify the biological term
Consists of the kidneys, ureters and bladder.
Identify the biological term
Removal of useful substances from glomerular filtrate.
With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion?
What is tubular secretion? Name the substances secreted through the renal tubules.
Which part of the nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
First step in urine formation is ______.
A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate ______.
Name the following:
Three stages of urine formation.
