Structure which helps in sound production is made up of_____

Answer

### Step-by-Step Solution:

1. **Identify the Structure**: The question asks for the structure that helps in sound production. The primary structure responsible for this function is known as the voice box.

2. **Name the Structure**: The voice box is scientifically referred to as the larynx.

3. **Functions of the Larynx**: The larynx has multiple functions, with sound production being the most significant. It also plays a role in breathing by serving as a passage that connects the pharynx to the trachea.

4. **Composition of the Larynx**: The larynx is composed of cartilaginous rings. These rings provide structure and support to the larynx, allowing it to function effectively in sound production.

5. **Final Answer**: Therefore, the structure which helps in sound production is the larynx, and it is made up of cartilage.