Which body system determines motor fitness skills by sending and receiving messages to and from the working muscles? a) muscular system
b) circulatory system
c) nervous system
d) endocrine system

You are called to a park for a 10-year-old boy who has fallen from a slide and broken his arm. the bone is angulated, and he is in a lot of pain. he states that his mother is at work, and he doesn't know the phone number. you should: