Question

how does the structure of skeletal muscle help it perform its function? its spindle - shaped cells allow it to do smooth movements. its striations allow for big movements. its nucleated cells allow it to trigger involuntary actions. its discs allow it to coordinate movement with other cells.

Explanation:

Skeletal muscle has striations due to the arrangement of contractile proteins actin and myosin. These striations enable powerful and coordinated contractions for big - scale movements. Spindle - shaped cells are characteristic of smooth muscle, not skeletal muscle. Skeletal muscle is under voluntary control, not involuntary. Intercalated discs are found in cardiac muscle, not skeletal muscle.

Answer:

Its striations allow for big movements.