Answer:
A. Serotonin levels are low, and by increasing serotonin, the patient will have an increase in happy feelings.
Explanation:
I calculated it logically
Answer:
The correct answer choice for the question: The study, or care, of patients with conditions of the heart and circulatory system, would be, D: cardiology.
Explanation:
The name of the medical field that studies and treats patients with conditions that affect their heart and cardiovascular system, is cardiovascular medicine. However, the medical specialists who work on taking care of this major body system are known as cardiologists, and the specialty from internal medicine is known as cardiology. Cardiology is precisely the specialty that focuses only on the heart and cardiovascular system, over any other system.
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