Name two types of filaments in a sarcomere.

Explanation

### Step-by-Step Solution:

1. **Understanding Sarcomeres**: A sarcomere is the basic structural and functional unit of skeletal muscle fibers. It is responsible for muscle contraction and is organized in a specific manner.

2. **Identifying Filaments**: Within a sarcomere, there are two main types of filaments that play crucial roles in muscle contraction.

3. **Thick Filaments**: The first type of filament is the thick filament, which is primarily composed of the protein myosin. Myosin filaments are responsible for generating force during muscle contraction.

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