Involuntary muscles have no myosin or actin since they lack striations

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement claims that involuntary muscles do not have myosin or actin because they lack striations.

2. **Identifying Muscle Types**: There are three main types of muscle tissue in the human body: skeletal, cardiac, and smooth muscles. Skeletal muscles are voluntary and striated, while cardiac and smooth muscles are involuntary.

3. **Defining Involuntary Muscles**: Involuntary muscles include cardiac muscles (found in the heart) and smooth muscles (found in organs). These muscles function without conscious control.

...