What is the mechanism of muscle contraction?

The mechanism of muscle contraction is best explained by the sliding filament theory, which states that contraction of a muscle fiber takes place by the sliding of the thin filaments over the thick filaments. Muscle fibers contain a red-colored oxygen-storing pigment called myoglobin. Myoglobin helps to store oxygen, which can then be utilized by the mitochondria in the muscles for ATP production.Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron.The junction between a motor neuron and the sarcolemma of the muscle fibre is called the neuromuscular junction or motor-end plate.When a neural signal reaches the neuromuscular junction, it releases a neurotransmitter (Acetylcholine) which generates an action potential in the sarcolemma.