Uraemia is an excretory disorder in which

Options

A. The tubules of kidney reabsorb urea in large amount
B. Concentration of urea goes high in the blood because the tubules are not able to remove if from the blood
C. Urea is produced in excess in the body
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Uraemia**: Uraemia is a medical condition that arises when there is an accumulation of urea in the blood. This condition is closely related to kidney function, as the kidneys are responsible for filtering urea from the bloodstream.

2. **Role of Urea**: Urea is a waste product formed from the breakdown of proteins and is normally excreted by the kidneys. It is highly soluble in water, which allows it to be easily filtered out of the blood.

3. **Kidney Function**: The kidneys filter blood through structures called nephrons. In healthy kidneys, urea is filtered out of the blood and excreted in urine. However, in cases of renal failure or dysfunction, this filtration process is impaired.

4. **Causes of Uraemia**: Uraemia occurs when the kidneys are unable to effectively filter urea from the blood, leading to elevated levels of urea. This can happen due to various reasons, including kidney disease or damage.

5. **Symptoms of Uraemia**: The increased concentration of urea in the blood can lead to several symptoms, including:
- Fatigue
- Loss of appetite
- Weakness
- Vomiting
- Muscle atrophy

6. **Conclusion**: Therefore, the correct statement regarding uraemia is that it is an excretory disorder characterized by increased levels of urea in the blood due to impaired kidney function.

**Final Answer**: Uraemia is an excretory disorder in which the concentration of urea in the blood is increased.

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