Which one influence the activity of kidneys

Options

A. Vasopressin
B. Thyroxine
C. Vasopressin and aldosterone
D. Gonadotrophin

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the factors that influence the activity of the kidneys. The kidneys play a crucial role in filtering blood, removing waste, and regulating fluid balance in the body.

2. **Identifying the Options**: The options provided are:
- Vasopressin
- Thyroxine
- Vasopressin and Aldosterone
- Gonadotrophin

3. **Analyzing Each Option**:
- **Vasopressin**: Also known as antidiuretic hormone (ADH), vasopressin is produced by the hypothalamus and released by the posterior pituitary gland. It regulates water reabsorption in the kidneys, thus influencing urine concentration.
- **Thyroxine**: This hormone, produced by the thyroid gland, primarily regulates metabolism and does not have a direct influence on kidney activity.
- **Aldosterone**: This hormone is produced by the adrenal glands and plays a significant role in regulating sodium and potassium levels, which in turn affects water retention and blood pressure. It also influences urine concentration.
- **Gonadotrophin**: These hormones (like LH and FSH) are primarily involved in reproductive functions and do not directly influence kidney activity.

4. **Conclusion**: The hormones that influence the activity of the kidneys by regulating urine concentration are **Vasopressin and Aldosterone**. Therefore, the correct answer is **Vasopressin and Aldosterone**.

**Final Answer**: Vasopressin and Aldosterone influence the activity of kidneys.

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