Mention the shape of smooth muscle fibre

Explanation

### Step-by-Step Solution:

1. **Understanding Smooth Muscle Fibers**: Smooth muscle fibers are a type of involuntary muscle tissue. This means that they function without conscious control.

2. **Identifying the Shape**: The specific shape of smooth muscle fibers is crucial to their function.

3. **Describing the Shape**: Smooth muscle fibers are described as being **spindle-shaped**. This means they are wider in the middle and taper off at both ends, resembling a spindle.

...