According to the chapter, what is stated about "These are called" in Exercise Effects And Recovery?
○ Organ Systems of Human Body Aggregates of cells constitute a tissue.
○ Muscle contraction uses up energy, which comes from food.
These are called voluntary muscles, such as, those of the limbs and the neck.
○ Food is completely digested in the intestine, a part of digestive system.
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This matches the chapter's stated information about "These are called". — Examisthan.com