Home Biology Locomotion and Movement Skill Builder Relaxation of the muscle takes place due to …
Biology Locomotion and Movement Skill Builder Single Correct MCQ
Published on: August 14, 2026

Relaxation of the muscle takes place due to

(I) Pumping of Ca 2+ ions in sarcoplasmic reticulum.

(II) ATP attached to myosin head and cross-bridge breaks down.

(III) Confirmational changes in troponin and masking the actin filament.

(IV) Z-line pulled inward.

Select the correct option.

A
I, III and IV
B
I and II
C
II, III and IV
D
I, II and III

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