★ Your Body Quiz
Which of the following is true about our body’s system?
A. The skeletal system sends messages to the body
B. Blood cells are part of the nervous system
C. The digestive system helps carbon dioxide leave the body through the lungs
D. The digestive system helps break down food into energy
Preview next quiz:
The average size of an adult heart is about the size of a:
A. fist
B. grapefruit
C. foot
D. kidney bean
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