A nurse is discussing the functions of the parasympathetic and the sympathetic nervous system with a group of nursing students. Which statement made by one of the students indicates a need for further teaching?
A. "The sympathetic nervous system regulates digestive function"
B. "The parasympathetic nervous system slows down the heart"
C. "The parasympathetic nervous system is involved in digestive functions"
D. "The sympathetic nervous system is involved in regulating body temperature"