The type of muscle fiber used for quick and powerful movements but tires easily is:
B. Type IIb
Explanation:
1. Type IIb muscle fibers, also known as fast-twitch glycolytic fibers, are designed for rapid and forceful contractions.
2. These fibers are well-suited for activities requiring short bursts of intense energy, such as sprinting or weightlifting.
3. However, Type IIb fibers fatigue quickly due to their reliance on anaerobic metabolism, which produces energy without oxygen but is not sustainable for prolonged periods.
In summary, Type IIb muscle fibers are ideal for explosive movements but fatigue faster compared to other muscle fiber types.
