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Question

Thick and thin filaments form the (i)__________. The thick and thin filaments overlap and form a definite pattern that form repeating units called (ii)______.


A

(i) myofibrils (ii) sarcomere

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B

(i) sarcomere (ii) myofibrils

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C

(i) fascia (ii) fascicle

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D

(i) fascicle (ii) fascia

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Solution

The correct option is A

(i) myofibrils (ii) sarcomere


Thick and thin filaments are protein filaments which form cylindrical structures called myofibrils. Each myofibril is arranged in a pattern, which repeats itself 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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