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 meninges, which are protective coverings of the brain and spinal cord. This statement is **correct**.

### Step 2: Analyze Statement B
**Statement B:** "Electrical synapses are rare in the human body."
- Electrical synapses are indeed less common compared to chemical synapses in the human body. Most synapses in the nervous system are chemical. Therefore, this statement is also **correct**.

### 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, where it plays a role in the auditory system. This statement is **incorrect**.

### Conclusion
After analyzing all three statements:
- Statement A: Correct
- Statement B: Correct
- Statement C: Incorrect

Thus, there is **1 incorrect statement**.

### Final Answer
The number of incorrect statements is **1**.

---