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PART - 2 - Unit V : CH - 17 Locomotion and Movement — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit V : CH - 17 Locomotion and Movement5 Marks
Question
Write the difference between:
Red and White muscles
✓

Answer

Differences between Red and White Muscles
S. No.Red MuscleWhite Muscle
1.Red muscles appear red due to a higher presence of myoglobin, hence termed as red muscles.White muscles appear white due to a lower presence of myoglobin, hence termed as white muscles.
2.Red muscles have more mitochondria.White muscles have fewer mitochondria.
3.They have a lower content of glycogen.They have a higher content of glycogen.
4.Red muscles are also known as oxidative muscles.White muscles are known as glycolytic muscles.
5.Energy in red muscles is obtained through aerobic respiration.Energy in white muscles is obtained through anaerobic respiration.
6.They have more blood capillaries.They have fewer blood capillaries.
7.These muscles have smaller diameter fibres.These muscles have larger diameter fibers.
8.They do not produce lactic acid.They produce lactic acid.
9.Red muscles do not easily experience fatigue.White muscles easily experience fatigue.
10.They contract slowly.They contract rapidly.
11.The fibres are thinner as compared to white filaments.White fibres are thicker than red filaments.
12.Example: Muscle fibres of human back.Example: Muscles of the eyeball.

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