The ______ is made up of a membrane, which starts vibrating with the frequency of the sound wave that falls on it.

Options

A. eardrum
B. tympanum
C. inner ear
D. pinna

Answer

To solve the question, we need to identify the part of the human body that is made up of a membrane and responds to sound waves by vibrating. Here’s a step-by-step breakdown of the solution:

### Step 1: Understanding the Question
The question asks for a term that describes a structure made of a membrane that vibrates when sound waves hit it.

### Step 2: Identifying the Structure
In the human body, there is a specific structure known for its ability to vibrate in response to sound waves. This structure is crucial for hearing.

### Step 3: Recognizing the Function of the Structure
The structure in question is responsible for converting sound waves into mechanical vibrations. This is a key function in the process of hearing.

### Step 4: Naming the Structure
The structure that fits the description of being made of a membrane and vibrating with sound waves is the "Eardrum."

### Step 5: Final Answer
Therefore, the answer to the question is "Eardrum."

### Summary of the Solution
The answer is: **Eardrum**. The eardrum is made up of a membrane, which starts vibrating with the frequency of the sound wave that falls on it.

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