Final answer:
The endocrine system is important in psychology because it helps regulate many body processes and plays a role in growth, metabolism, sexual development, and the maintenance of homeostasis.
Step-by-step explanation:
The endocrine system is important in psychology because it helps regulate many body processes and plays a role in growth, metabolism, sexual development, and the maintenance of homeostasis. The endocrine system coordinates with the nervous system to control the functions of other organ systems, and both systems use chemical signals to communicate and regulate the body's physiology. Hormones released by the endocrine system act on target cells to regulate development, behavior, and other physiological processes.