Home Biology Locomotion and Movement Skill Builder Arrange the given steps of muscle contractio…
Biology Locomotion and Movement Skill Builder Single Correct MCQ
Published on: August 14, 2026

Arrange the given steps of muscle contraction in the series of events from first to last.

(I) Myosin head binds to the exposed active site on actin to form a cross-bridge.

(II) The Z-line attached to these actins are also pulled inwards thereby, causing shortening of sarcomere, also called contraction.

(III) This pulls the attached actin filaments towards the centre of A-band.

The correct option is

A
I → II → III
B
III → II → I
C
I → III → II
D
III → I → II

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