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Types of Skeletal Muscle

Red / Fast
Red / Fast

Skeletal muscle is one of three major muscle types, the others being cardiac muscle and smooth muscle. It is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system.

Red / Slow
Red / Slow

Red muscles (Example: extensor muscle on back of human body) 1. Red muscles are thin muscle fibres 2. Red in colour due to the presence of large amount of myoglobin 3. Slow and sustained contraction 4. Depend on aerobic metabolism for energy (oxidative phosphorylation) 5. Mitochondria is abundant 6. No accumulation of lactic acid 7.

White / Fast
White / Fast

* Most skeletal muscles contain a mixture of all three types of skeletal muscle fibres. However, the proportions of the different types of fibres that form specific muscles vary according to how the muscle is used - and, to a certain extent, also on genetic factors.

source: ivyroses.com