🔬 Biology · Locomotion and Movement · NEET

According to the sliding-filament theory, contraction occurs as the actin filaments slide over:

Correct answer: A. myosin

Explanation: The thin actin filaments slide over the thick myosin filaments, shortening the sarcomere.

Concept context

Types of movement, muscle contraction, skeletal system, joints, and disorders. Important for Class 11 and NEET.