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Standard IX
Biology
Question

Uraemia is an excretory disorder in which
  1. The tubules of kidney reabsorb urea in large amount.
  2. Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood.
  3. Urea is produced in excess in the body.
  4. None of the above

A
Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood.
B
Urea is produced in excess in the body.
C
None of the above
D
The tubules of kidney reabsorb urea in large amount.
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Solution
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Uraemia is the toxic effects of abnormally high concentrations of urea or nitrogenous substances in the blood as a result of the kidneys failure to expel these waste products by way of the urine. The end products of protein metabolism accumulate in the blood but are normally filtered out when the blood passes through the kidneys. Uraemia can result from any disorder that impairs the functioning of the kidneys or that hinders the excretion of urine from the body.

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