Somatostatin

Options

A. Stimulates glucagon release and inhibits insulin release
B. Stimulates release of insulin and glucagon
C. Inhibits release of insulin and glucagon
D. Inhibits glucagon release and stimulates insulin release.

Answer

**Step-by-Step Solution:**

1. **Understanding Somatostatin**: Somatostatin is a hormone that is also known as the growth hormone-releasing inhibiting hormone. Its primary function is to inhibit the release of various hormones in the body.

2. **Effects on Growth Hormone**: One of the key roles of somatostatin is to inhibit the release of growth hormone from the pituitary gland. This establishes its function as an inhibiting hormone.

3. **Effects on Pancreatic Hormones**: Somatostatin also plays a crucial role in the regulation of pancreatic hormones. It inhibits the secretion of two important hormones: insulin and glucagon.

4. **Understanding Insulin and Glucagon**:
- **Insulin**: This hormone lowers blood glucose levels by facilitating the uptake of glucose into cells.
- **Glucagon**: This hormone raises blood glucose levels by promoting the release of glucose stored in the liver.

5. **Final Conclusion**: Since somatostatin inhibits the release of both insulin and glucagon, the correct answer to the question regarding the effects of somatostatin is that it inhibits the release of insulin and glucagon.

**Final Answer**: Somatostatin inhibits the release of insulin and glucagon.

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