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 of selecting the incorrect match, we will analyze each option provided:

1. **Electrical Synapse - Rare in the body**:
- Electrical synapses are indeed rare compared to chemical synapses. They allow for rapid signal transmission between neurons and are primarily found in specific areas of the brain. This match is correct.

2. **Arachnoid - Thin inner meninge**:
- The arachnoid is actually the middle layer of the three meninges that surround the brain and spinal cord. The inner meninge is the pia mater. Therefore, this match is incorrect.

3. **Medulla - Important centers for gastric secretion**:
- The medulla oblongata is responsible for various autonomic functions, including the regulation of gastric secretion. This match is correct.

4. **Scala media - Middle chamber of cochlea**:
- The scala media, also known as the cochlear duct, is indeed the middle chamber of the cochlea filled with endolymph. This match is correct.

Based on the analysis above, the incorrect match is:

**Answer: Arachnoid - Thin inner meninge (Option B)**