Select the incorrect match

Options

A. Electrical synapse - Rare in body
B. Arachnoid - Thin inner meninge
C. Medulla - Important centres for gastric secretions
D. Scala media - Middle chamber of cochlea

Answer

To solve the question "Select the incorrect match," we need to evaluate each option provided and determine if the match is correct or incorrect.

### Step-by-Step Solution:

1. **Evaluate Option 1: Electrical Synapse**
- **Match:** Electrical synapse is matched with "rare in the body."
- **Analysis:** Electrical synapses are indeed rare compared to chemical synapses. They allow for direct ion flow between cells, making them less common.
- **Conclusion:** This match is **correct**.

2. **Evaluate Option 2: Arachnoid**
- **Match:** Arachnoid is matched with "thin inner meninges."
- **Analysis:** The arachnoid mater is actually the middle layer of the meninges, not the inner layer. The inner layer is the pia mater.
- **Conclusion:** This match is **incorrect**.

3. **Evaluate Option 3: Gastric Centers**
- **Match:** Important centers for gastric secretions.
- **Analysis:** The gastric centers in the brain (like the medulla oblongata) are indeed responsible for regulating gastric secretions.
- **Conclusion:** This match is **correct**.

4. **Evaluate Option 4: Scala Media**
- **Match:** Scala media is matched with "middle chamber of cochlea."
- **Analysis:** The scala media is indeed the middle chamber of the cochlea in the inner ear.
- **Conclusion:** This match is **correct**.

### Final Answer:
The incorrect match is **Option 2: Arachnoid - thin inner meninges**.