Which body system plays an important role in influencing behavior?

A) endocrine
B) cardiovascular
C) respiratory
D) digestive
E) integumentary

The endocrine system is responsible for producing and regulating hormones, which can have a significant impact on behavior. For example, imbalances in hormones such as cortisol (produced by the adrenal gland) and dopamine (produced by various organs including the brain) have been linked to depression and anxiety. Hormones can also influence aggression and sexual behavior.