In the context of psychosomatic medicine, Flanders Dunbar and Franz Alexander maintained that conflicts produce anxiety, which becomes unconscious and takes a physiological toll on the body via the?

Autonomic nervous system.

Explanation:

The human psychology involves the study of the emotions, anger and feelings of the humans with themselves and other people of the society. The emotions are controlled by the external as well as internal factors.

The peripheral nervous system of the body constitutes the autonomic nervous system. This system is activated during the stress and anxiety response. The autonomic nervous system prepares the body for the fight and flight mechanism.

Thus, the answer is autonomic nervous system.