Read the following statements:
A. Dura mater is the outer layer of the cranial meninges.
B. Electrical synapses are rare in the human body .
C. The tectorial membrane is found in the middle ear.
How many statements are incorrect?

Options

A. None
B. One
C. Two
D. Three

Answer

To determine how many statements are incorrect, let's analyze each statement one by one:

### Step 1: Analyze Statement A
**Statement A:** "Dura mater is the outer layer of the cranial meninges."
- The dura mater is indeed the outermost layer of the cranial meninges, which protect the brain. This statement is **correct**.

### Step 2: Analyze Statement B
**Statement B:** "Electrical synapses are rare in the human body."
- Electrical synapses are not rare in the human body; they are found in certain areas, particularly in the brain. However, they are less common than chemical synapses. This statement is **incorrect**.

### Step 3: Analyze Statement C
**Statement C:** "The tectorial membrane is found in the middle ear."
- The tectorial membrane is actually located in the inner ear, specifically in the cochlea, and not in the middle ear. This statement is **incorrect**.

### Conclusion
- Statement A is correct.
- Statement B is incorrect.
- Statement C is incorrect.

Thus, there are **two incorrect statements** (B and C).

### Final Answer
The number of incorrect statements is **2**.

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