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Question

Which of the following sarcomeric protein help the sarcomere to spring after recoil and prevent overstretching

A
Tropomyosin
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B
Actin molecule
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C
Myosin molecule
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D
Titin
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Solution

The correct option is D Titin
Titin is a large abundant protein of striated muscle. Titin's primary functions are to stabilize the thick filament, center it between the thin filaments, prevent overstretching of the sarcomere, and to recoil the sarcomere like a spring after it is stretched.
Muscles contract through the action of two proteins called actin and myosin along with regulatory proteins tropomyosin and troponin, control your voluntary movements.

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