Xerxes is most likely suffering from FUNCTIONAL NEUROLOGICAL SYMPTOM DISORDER. This is a type of disorder in which the patient experience various symptoms but the systems of the patient is perfectly normal but function incorrectly.
Superficial charm, manipulative, pathological liar, shallow emotions, lack of remorse, incapacity for love, need for stimulation, Impulsive nature
Systemic circulation which is the movement of blood through tissues of the heart carries oxygenated blood from left ventricle through arteries.
Systemic circulation moves blood between the heart and rest of body . It send oxygenated blood out to cells and return the degenerated blood to the heart.
Heart is the only organ in circulatory system organs . blood goes from heart to lung to get oxygen. lungs are the part of the respiratory system. Heart pumps oxygenated blood through artiest to the body. Systemic provide the functional blood supply to all body tissue. Oxygen locks into molecule called hemoglobin in red blood cells.
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It could possibly be mental because it has to do what you believe in but it could also be social because you need your parents and peers/ culture to define who you are and what you choose to be