We will study the different systems of the human body and their functions: the digestive system, the circulatory system, the kidneys and other organs.
(We; will study; the different systems of the human body and their functions: the digestive system, the circulatory system, the kidneys and other organs)
We
will study
the different systems of the human body and their functions: the digestive system, the circulatory system, the kidneys and other organs