GIP functions antagonistic to

Options

A. ANF
B. CCK
C. Renin
D. Gastrin

Answer

To determine which function GIP (Gastric Inhibitory Peptide) is antagonistic to, we need to analyze the options provided and understand the role of GIP in the digestive system.

### Step-by-Step Solution:

1. **Understand GIP Function**:
- GIP, or Gastric Inhibitory Peptide, primarily functions to inhibit gastric acid secretion and gastric motility. This action helps prevent damage to the small intestine from the acidic contents of the stomach.

2. **Identify the Options**:
- The options given are:
- A) ANF (Atrial Natriuretic Factor)
- B) CCK (Cholecystokinin)
- C) Renin
- D) Gastrin

3. **Analyze Each Option**:
- **A) ANF**: This hormone is involved in regulating blood pressure and fluid balance, and is not related to gastric functions. Therefore, it is incorrect.
- **B) CCK**: Cholecystokinin is involved in digestion and stimulates the release of bile from the gallbladder and pancreatic enzymes. It does not directly oppose GIP, so it is also incorrect.
- **C) Renin**: This enzyme is part of the renin-angiotensin-aldosterone system, which regulates blood pressure and fluid balance. It does not relate to gastric functions, making it incorrect.
- **D) Gastrin**: Gastrin is a hormone that stimulates gastric acid secretion and promotes gastric motility. Since GIP inhibits gastric functions, it is antagonistic to gastrin.

4. **Conclusion**:
- Given the analysis, GIP functions antagonistically to **Gastrin**.

### Final Answer:
GIP functions antagonistic to **Gastrin**.

---