Question
Contraction and relaxation of muscles lead to
- Excretion
- Reproduction
- Movements
- Coordination
Hint:
The muscles consist of microfilaments which consist of actin.
The correct answer is: Movements
- Contraction and relaxation of the muscles lead to movement.
- The muscles consist of actin and myosin filaments. The actin filament is usually present in the microfilament of the cytoskeleton.
- When we have to move our muscles, the actin filament slides over the myosin. This results in the onset of certain chemical reactions which lead to the contraction of muscles.
- When we stop moving, the actin moves away from myosin and this causes the relaxation of the muscle fibers.
- There is a continuous contraction and relaxation of these fibers which results in the overall movement.
The movement performed by us is called voluntary movement. It usually involves, the movement of skeletal muscles.
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The actin filament slides over the myosin which causes a series of chemical reactions, resulting in the contraction of the muscles.
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The property of changing shape easily is of great advantage to the white blood cells as this helps to reach the site of infection quickly.
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