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प्रश्न
If the afferent arteriole of the nephron constricts, what happens to the GFR in that nephron? If the efferent arteriole constricts what happens to the GFR in that nephron? Assume that no auto regulation takes place.
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उत्तर
If the afferent arteriole of the nephron constricts, GFR is reduced. If the efferent arteriole constricts, GFR is increased.
संबंधित प्रश्न
Explain the autoregulatory mechanism of GFR.
Put a tick mark (✓) against the most appropriate alternative in the following statement :
Besides water, the urine mainly contains :
Put a tick mark (✓) against the most appropriate alternative in the following statement :
Filtration of excretory wastes from the blood occurs in:
Answer the following in detail.
Explain the structure of a nephron with the help of a diagram.
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 the working of the nephron.
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?
Write the functional activity of the following structure: Bowman’s capsule
In which segment of the nephron most of the re-absorption of substances takes place?
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?
Concentration of urine depends upon which part of the nephron
If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected?
Identify the biological term
A ball of inter twined capillaries.
Identify the biological term
Consists of the kidneys, ureters and bladder.
Identify the biological term
Regulation of water and dissolved substances in blood and tissue fluid.
What is tubular secretion? Name the substances secreted through the renal tubules.
During ultra:filtration, ____________ is unable to filter through the glomerular capillaries.
Which part of the nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
Name the following:
Three stages of urine formation.
