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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?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.