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Life Science Week 9: Being Human

Across
The _________ system is the body's control center and includes the brain and spinal cord.
He wrote books and illustrated body systems.
The __________ system helps us get oxygen from the air into our blood.
_________ people lead inactive lives and seldom exercise.
Down
_________ is important in making healthy muscles and keeping your brain younger.
The central part of the circulatory system that pumps blood through blood vessels to the body
Covers the ends of some bones to absorb the energy from hard bumps
The central part of the nervous system