50. What functions are performed by the endocrine system? A. It allows the ovarian cycle, conception and childbirth to occur. B. It controls the body with chemicals called hormones. C. It protects the...

50. What functions are performed by the endocrine system?

A. It allows the ovarian cycle, conception and childbirth to occur.

B. It controls the body with chemicals called hormones.

C. It protects the body by destroying bacteria and tumour cells.

D. It directs body functions with chemicals called neurotransmitters.