All of the following hormones are released from GIT except:

Options

A. Gastrin
B. CCK
C. Erythropoetin
D. Secretin

Answer

To solve the question, "All of the following hormones are released from the GIT except:", we need to analyze each of the given options and determine their origins.

### Step-by-Step Solution:

1. **Identify the hormones listed in the options**:
- Gastrin
- CCK (Cholecystokinin)
- Erythropoietin
- Secretin

2. **Analyze each hormone**:
- **Gastrin**: This is a peptide hormone produced by G-cells located in the lining of the stomach. Since the stomach is part of the gastrointestinal tract (GIT), gastrin is released from the GIT.

- **CCK (Cholecystokinin)**: This hormone is produced by I-cells in the lining of the duodenum, which is also part of the GIT. Therefore, CCK is released from the GIT.

- **Erythropoietin**: This is a glycoprotein hormone that stimulates the production of red blood cells. It is produced by interstitial fibroblast-like cells surrounding the renal tubules in the kidneys. Since the kidneys are not part of the gastrointestinal tract, erythropoietin is not released from the GIT.

- **Secretin**: This hormone is secreted by S-cells in the duodenum, which again is part of the GIT. Thus, secretin is released from the GIT.

3. **Conclusion**: Based on the analysis, the only hormone that is not released from the gastrointestinal tract is erythropoietin.

### Final Answer:
**Erythropoietin** is the correct answer as it is not released from the gastrointestinal tract.

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