Outline-2, BIO 2310, Types of Skeletal Muscle Fibers

VII. TYPES OF SKELETAL MUSCLE FIBERS

A. Slow twitch fibers (I)

1. Fatigue resistant

2. Red – blood

3. Myoglobin

4. Mitochondria – aerobic met.

B. Intermediate – fast twitch – fatigue resistant (IIB)

C. Fast twitch – fatiguable (IIA)

1. Glycogen

2. No myoglobin

3. White

4. Anaerobic metabolism