Your Heart And Circulation

Trouble with the human body may be approached from the point of view of its structure or its function. The heart may be enlarged, or its valves may leak or be narrowed, or its blood supply may be inadequate because of blocking. The changes in structure produce changes in function which are reflected in symptoms. From the functional point of view the heart may beat too fast or too slowly, or irregularly. Its beat may be weak or strong. The heart may be overactive or underactive.

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