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Did you know?
Your heart beats over 36 million times a year.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.