UNIT 1: LIVING THINGS
Give 1 function of the skeleton.
protect our organs, give shape, allow us to move, helps us to grow
When we bend our arms, what happen to the biceps and triceps?
the biceps contracts and the triceps relax.
When we straighten our arms, what will happen to your front muscles or biceps and back muscles or triceps?
The biceps relaxes and the triceps contracts.