Question

Which is not true for Red Fibres ___________________.

• A. Muscle contains a red coloured oxygen storing pigment
• B. Muscle contains plenty of Mitochondria
• C. These muscles also called aerobic muscles
• D. Amount of Sarcoplasmic reticulum is high in it

Answer 1

Answer: (D)

Amount of Sarcoplasmic reticulum is high in it

The correct option is D.

Red muscles have less sarcoplasmic reticulum. They carry out considerable aerobic oxidation without accumulating much lactic acid. Thus red muscle fibres can contract for a longer period without fatigue.