question_answer

As per the sliding filament mechanism, in contracted state muscle will show the following disposition:

A)

B)

C)

D)                                

Correct Answer: B

Solution :

                 Sliding filament mechanism of muscle contraction was given by A. F. Huxley and H. E. Huxley in 1954. According to sliding filamentous theory, there is no actual shortening of myofibrils during muscle contraction but actin filaments slide post the myosin filament establishing new cross bridges like a rachet mechanism.