The muscles showing slow and prolonged contractions are ______

Explanation

**Step-by-Step Solution:**

1. **Understanding Muscle Types**: There are three main types of muscles in the human body: skeletal muscles, cardiac muscles, and smooth muscles. Each type has different characteristics and functions.

2. **Identifying Slow and Prolonged Contractions**: The question specifically asks for muscles that exhibit slow and prolonged contractions. It's important to differentiate between the types of muscles based on their contraction characteristics.

3. **Involuntary Muscles**: The muscles that show involuntary control are known as involuntary muscles. These muscles function without conscious control and are responsible for various automatic processes in the body.

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