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Question

Choose the correct option to label the following parts


A

1.Thin filament 2.Thick filament 3.Sarcomere

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B

1.Thick filament 2.Thin filament 3.Sarcomere

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C

1.Sarcomere 2.Thick filament 3.Thin filament

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D

1.Sarcomere 2.Thin filament 3.Thick filament

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Solution

The correct option is A

1.Thin filament 2.Thick filament 3.Sarcomere


Thick and thin filaments are protein filaments which form cylindrical structures called myofibrils. Each myofibril is arranged in a pattern, which repeats throughout the length of the myofibril. This repeating pattern is called a sarcomere, which is the basic contractile unit of a muscle fibre.


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