What causes your muscles to move?

Answer 1

Muscle is formed of long muscle fibers . Muscle fiber is formed of many smaller units. These smaller units contract. This makes muscle to contract.

As explained in short answer, smaller units of muscle fiber is a myoneme. Each my one me is with two muscle protein molecules. These proteins are actin and myocin. In presence of calcium ions actin and myocin filaments interact. Interaction of actin and myocin makes myoneme to contract. Initially contraction of myoneme contracts muscle fibre to contract. And muscle to contract.

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Answer 2

Connor Abernathy

The primary mechanism underlying muscle movement is the contraction and relaxation of muscle fibers, which is regulated by electrical impulses emitted by motor neurons. These impulses cause the muscle cells to release calcium ions, which in turn cause actin and myosin filaments to slide, which in turn causes muscle contraction.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.