Why a red muscle fibre can work for a prolonged period while a white muscle fibre suffers from a fatigue after a short period?

Explanation

**Step-by-Step Solution:**

1. **Understanding Muscle Fiber Types**: There are two main types of muscle fibers: red muscle fibers (also known as slow-twitch fibers) and white muscle fibers (fast-twitch fibers). Each type has distinct characteristics that affect their performance and endurance.

2. **Vascularization**: Red muscle fibers are more vascularized, meaning they have a greater blood supply compared to white muscle fibers. This increased blood flow provides more oxygen and nutrients necessary for prolonged activity.

3. **Mitochondria Presence**: Red muscle fibers contain a larger number of mitochondria. Mitochondria are known as the powerhouse of the cell, where ATP (adenosine triphosphate) is produced. ATP is essential for muscle contraction and energy metabolism.

...