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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?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.