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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?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Did you know?
Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.