Answer :
Answer:
nervous system and the immune system
Explanation:
Psychoneuroimmunology: This is one of the branches of medicine. It deals with nervous system activities and the impact of emotional states, for example, stress, anxiety, and depression on the function of the immune system, specifically on the progression of any disease.
The psychological or mental state of a person affects the function of the immune system and at the same time, the condition or status of the immune system also affects the psychological or mental state of a person by influencing blood level.
Psychoneuroimmunology is the study of the interaction between the nervous system and the immune system.