Question

Write difference between red and white muscles

Answer 1

Answer:

Red muscle and white muscle are skeletal muscles which perform various functions in the body. Red muscles are named so because they are dense with capillaries and are rich in myoglobin and mitochondria – which gives it a characteristic red appearance. On the other hand, white muscles have comparatively less mitochondria and myoglobin, giving the muscles a “whitish” appearance.

Answer 2

Answer

Red muscle fibre :

• Red muscle fibres are thin and small in size
• They are red in colour as they contain large amount of myoglobin.
• They contain numerous mitochondria.
• They carry out slow and sustained contractions for a long period.
• They provide energy by aerobic respiration. thus they are called aerobic muscles.
• In red muscle fibres amount of sarcoplasmic reticulum is less.

White muscle fibres :

• White muscle fibres are thick and larger in size.
• They are white in colour as they contain small amount of myoglobin.
• They contain less number of Mitochondria.
• They carry out fast work for short duration.
• They provide energy by anaerobic respiration. thus they are called anerobic muscles.
• In white muscle fibres amount of sarcoplasmic reticulum is more.

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