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Solution
In a nephron, the blood .enters by afferent arteriole and is filtered through the glomerulus. The filtrate is passed into the Bowman’s capsule; by the process called ultrafiltration. The filtrate contains useful products like glucose, amino acids, salts, etc. The plasma proteins, blood corpuscles, and platelets are retained in the glomerular mass. The filtrate now passes through Henle’s loop where selective reabsorption of useful products takes place but urea and uric acid are not absorbed. Now the excretory substances are secreted by proximal and distal convoluted tubule and urine is formed.
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RELATED QUESTIONS
Fill in the blank :
The unit of human kidney is called .....................
Define the following:
Dialysis
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?
Higher Order Thinking Skill
Why do you think that urine analysis is an important part of medical diagnosis?
Concentration of urine depends upon which part of the nephron
Identify the biological term
What solute the blood contains that are not present in the glomerular filtrate?
How is urea formed in the human body?
Filtration of the blood takes place at ______.
How does tubular secretion help in maintaining ionic and acid-base balance in body fluids?
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?
