The striated appearance of skeletal muscle is due to regular orderly arrangement of which of the following

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The striated appearance of skeletal muscle is due to the regular and orderly arrangement of the thick and thin filaments into alternating A bands (dark bands containing overlapping thick and thin filaments) and I bands (lighter bands containing only thin filaments). This arrangement creates the visible striation pattern observed in skeletal muscle under a microscope. T tubules and lateral sacs of the sarcoplasmic reticulum play important roles in muscle contraction but do not contribute to the striated appearance. Motor units are groups of muscle fibers innervated by a single motor neuron and are not directly related to the striation pattern.

The Striated Appearance of Skeletal Muscle Is Due to Regular