Advertisements
Advertisements
प्रश्न
What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?
उत्तर
Glomerular hydrostatic pressure (55 mm Hg) is the force that promotes filtration. The colloidal osmotic pressure (30 mm Hg) and the capsular hydrostatic pressure (15 mm Hg) are the two opposing forces.
The difference between the force promoting and opposing filtration is the net filtration pressure. It is responsible for filtration.
Net filtration pressure = Glomerular hydrostatic pressure – (Colloidal osmotic pressure + Capsular hydrostatic pressure).
संबंधित प्रश्न
Which of the following is the correct path taken by urine in our body?
Put a tick mark (✓) against the most appropriate alternative in the following statement :
Besides water, the urine mainly contains :
Define the following:
Nephron
Differentiate between Afferent arteriole and Efferent arteriole.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Glomerular filtrate consists of many substances such as water, salts, glucose and white blood corpuscles.
Write the functional activity of the following structure: Bowman’s capsule
Answer the following question.
Effective filtration pressure was calculated to be 20 mmHg; where glomerular hydrostatic pressure was 70 mm of Hg. Which other pressure is affecting the filtration process? How much is it?
Higher Order Thinking Skill
Why do you think that urine analysis is an important part of medical diagnosis?
In which segment of the nephron most of the re-absorption of substances takes place?
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.
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?
The end product of Ornithine cycle is ______.
Identify the biological term
A liquid which gathers in the bladder.
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.
Identify the biological term
What solute the blood contains that are not present in the glomerular filtrate?
Sort the following into actively or passively transported substances during reabsorption of GFR.
glucose, amino acids, nitrogenous wastes, Na+, water
How does tubular secretion help in maintaining ionic and acid-base balance in body fluids?
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 ______.
