Behavioral patterns are influenced primarily by which two organ systems?

A) nervous and digestive
B) digestive and urinary
C) nervous and reproductive
D) nervous and endocrine
E) reproductive and digestive

Nervous System

Organ system of humans that includes the brain, spinal cord, sense organs (eyes, ears, etc.), and associated nerves. Receives, integrates, and stores sensory input; coordinates activity of other organ systems.

Endocrine System

Organ system involved in the coordination of body activities; uses hormones as chemical signals secreted into the bloodstream.