Question

Uraemia is an excretory disorder in which
A) The tubules of the kidney reabsorb urea in large amounts.
B) Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood
C) Urea is produced in excess in the body
D) None of these.

Answer 1

Hint: Uraemia is caused by extreme and irreversible damage to your kidneys. It is a raised level in the blood of urea and the other nitrogenous waste compounds. It causes nausea, vomiting, and easy fatigue.

Complete answer :
Uraemia occurs when your kidneys become damaged. The toxins or bodily waste that your kidneys normally send out in your urine end up in your bloodstream instead. These toxins are known as creatinine and urea. Uraemia is the toxic effects of abnormally high concentrations of urea in the blood as a result of the kidney failure to expel these waste products by way of the urine. It is basically described as the condition involving abnormally high levels of waste products in the blood. It is a dangerous condition that occurs when a person is in the final stage of kidney chronic disease.

Additional Information :
Symptoms of Uraemia include fatigue, nausea, loss of appetite, a metallic taste in the mouth and mental confusion. One study from 1998 followed 139 people with uraemia for up to 5 years when 30% people died. It adversely results In kidney transplant.

Thus, the correct answer is option B. i.e. Concentration of urea goes high in the blood because tubules are not able to remove it from the blood.

Note:Uraemia can result from any disorder that impairs the functioning of the kidneys or that hinders the excretion of urine from the body. During surgery for its treatment there is an increased risk for uremic bleeding.