Biological Bases of Behavior

The physical structure of the body plays an important role in the behavior of an individual. The most important physical structure for psychologists is the nervous system. The nervous system carries orders from the brain and spinal cord to various glands and muscles, it also carries signals from stimuli receptors to the spinal cord and brain. If you wanted to blink your eye a signal would be created in the brain, then it would be transported by neurons to the muscle controlling the eyelid.