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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Did you know?
More than 4.4billion prescriptions were dispensed within the United States in 2016.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.