Question

Difference between Red fibres and white fibres?

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Answer 1

A N S W E R :

The difference between red and white muscle fibres is as follows –

❍ Red Muscle Fibres :

• Red muscle fibres have a thin structure.

• Red muscle fibres are dark in colour.

• Red muscle fibres have a slow rate of contraction.

• Red muscle fibres are rich in mitrochondria.

• Red muscle fibres are rich in myoglobin.

• Red muscle fibres possess the ability to perform slow and sustained constraction for a long period of time without fatigue.

❍ White Muscle Fibres :

• White muscle fibres have a thick structure.

• White muscle fibres are light in colour.

• White muscle fibres have a fast rate of constraction.

• White muscle fibres are poor in myoglobin.

• Myoglobin is completely absent in the white muscle fibres.

• White muscle fibres possess the ability to perform fast and strenuous activities for short period of time, followed by fatigue.