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  4. The functional unit of contractile system in a striated muscle is

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Q. The functional unit of contractile system in a striated muscle is

AIPMTAIPMT 1998Locomotion and Movement

Solution:

Sarcomere is the functional unit of myofibril. It contains two types of protein filaments called actin and myosin. These filaments slide upon each other to bring about the contraction of the muscles.