example question 10
which of the following statement about your body system at work is false?
1. your digestive system is at work when you hear your stomach growling before recess.
2. your muscular system is at work when you pant after running around the field during P.E.
3. your skeletal system is at work when you bend your fingers to grip the pencil when writing.
4. your circulatory system is at work when you hear your heart thumping before you it for an examination