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प्रश्न
What is meant by the term osmoregulation?
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उत्तर
- Kidneys continuously remove harmful substances from the body in the form of urine. Apart from this, the tissues also control the amount of salt and water in the liquid.
- When the amount of water in the body increases, that is, when the osmolality of the body fluid decreases, urine becomes thin (diluted) and its quantity increases.
- When there is a lack of water in the body, that is, when the osmolality of body tissue fluid increases, urine becomes thicker and its quantity reduces.
- The amount of urine is mainly controlled by aldosterone and antidiuretics. Aldosterone increases the reabsorption of Na+, so that the appropriate amount of Na+ is maintained in the environment.
- Antidiuretic or vasopressin, is the main regulator of urine dilution or concentration. Osmolality is controlled in the bodies of living beings through the process of osmotic regulation.
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संबंधित प्रश्न
Glucose is taken back from glomerular filtrate ___________
(A) along with concentration gradient
(B) against concentration gradient
(C) by simple diffusion
(D) by tubular secretion
Which of the following is the correct path taken by urine in our body?
What is meant by osmoregulation?
Differentiate between
bowman’s capsule and glomerulus.
Define the following term:
Ultrafiltration
Choose the correct option.
Tubular secretion does not take place in ______.
Mention any two vital functions of human kidney
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?
Identify the biological term
A liquid which gathers in the bladder.
Identify the biological term
Carry urine from the kidneys to the bladder.
What is tubular secretion? Name the substances secreted through the renal tubules.
During ultra:filtration, ____________ is unable to filter through the glomerular capillaries.
Na+ excretion in the urine is reduced by secretion of ______
Proximal convoluted tubule differs from distal convoluted tubule being lined by ______
First step in urine formation is ______.
The pH of human urine is approximately ______.
Sort the following into actively or passively transported substances during reabsorption of GFR.
glucose, amino acids, nitrogenous wastes, Na+, water
Name the substances other than water, that are reabsorbed during urine formation. What are the two parameters that decide the amount of water that is reabsorbed in the kidney?
