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प्रश्न
What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?
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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
Glucose is taken back from glomerular filtrate ___________
(A) along with concentration gradient
(B) against concentration gradient
(C) by simple diffusion
(D) by tubular secretion
Put a tick mark (✓) against the most appropriate alternative in the following statement :
Besides water, the urine mainly contains :
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.
Answer the following in detail.
Explain the structure of a nephron with the help of a diagram.
Name the following:
Organ where ultrafiltration occurs.
Give the working of the nephron.
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.
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?
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?
If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected?
Identify the biological term
Produced when blood is filtered in a Bowman’s capsule.
Identify the biological term
Carry urine from the kidneys to the bladder.
How is urea formed in the human body?
During ultra:filtration, ____________ is unable to filter through the glomerular capillaries.
Na+ excretion in the urine is reduced by secretion of ______
Minimum reabsorption occurs in ______.
The pH of human urine is approximately ______.
Complete the following:
Urinary excretion = Tubular reabsorption + Tubular secretion –
