Select two of the unit student learning outcome (USLO) prompts below to respond to in this week's discussion. Distinguish the structures and functions of skeletal, cardiac, and smooth muscle. Differentiate the structures and processes of the neuromuscular junction and initiation of contraction. Differentiate the steps of the sliding filament theory. Differentiate the different ways muscles obtain their energy supply. Differentiate homeostatic imbalances of the muscular system.