Ram has high level of calcium in his blood Excess of which hormone can cause this effect ?

Options

A. Thyrocalcitonin
B. Growth hormone
C. Parathormone
D. Insulin

Answer

To determine which hormone can cause high levels of calcium in Ram's blood, we can analyze the options provided:

1. **Insulin**: This hormone primarily regulates glucose levels in the body and has no significant role in calcium regulation. Therefore, it cannot be responsible for high calcium levels.

2. **Thyrocalcitonin (Calcitonin)**: This hormone is produced by the thyroid gland and functions to lower blood calcium levels by inhibiting osteoclast activity (the cells that break down bone). Thus, it also cannot be responsible for high calcium levels.

3. **Growth Hormone**: This hormone, also known as somatotropin, is important for growth and development. It stimulates cell reproduction and regeneration but does not directly influence calcium levels in the blood. Hence, it is not the correct answer.

4. **Parathyroid Hormone (PTH)**: This hormone is produced by the parathyroid glands and plays a crucial role in regulating calcium levels in the blood. PTH increases blood calcium levels by stimulating the release of calcium from bones, increasing calcium reabsorption in the kidneys, and promoting the activation of vitamin D, which enhances intestinal absorption of calcium. Therefore, excess parathyroid hormone can lead to elevated calcium levels in the blood.

Based on this analysis, the hormone responsible for causing high levels of calcium in Ram's blood is **Parathyroid Hormone (PTH)**.

### Summary:
- **Answer**: Parathyroid Hormone (PTH)