Match the function with the correct organ system. Transports nutrients, wastes, and gases throughout the body Converts food molecules into absorbable forms Main system that secretes hormones Provides an outer covering of the body for protection Transports excess fluid from tissues to blood Involves contractions and creates most body heat Stimulates muscles to contract and interprets information from sensory organs Produces eggs and sperm Exchanges gases between air and blood Provides a framework and support for soft tissues and produces blood cells in red marrow Removes liquid and wastes from blood and transports them to the outside of the body