Answer:
All animals (including humans) have a muscular system. However, they can vary and change based on the type of animal (vertebrae, mammal, amphibians, etc.)
Step-by-step explanation:
The muscular system is the biological system of animals (including humans) that allows them to move internally and externally. The muscular system in vertebrates consists of three different types of muscles: cardiac, skeletal and smooth. Cardiac muscle is a striated muscle that makes up the heart.
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