Congratualtions! You made it through the circulatory system.
We are moving onto our next system which is composed of organs
that break down food into protein, vitamins, minerals, carbohydrates,
and fats.  The body needs all these things for energy, growth, and
to repair itself.  Do you know what system we are in?





a. Endocrine System

b. Immune System

c. Digestive System