When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
Did you know?
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Did you know?
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Did you know?
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun
The process of learning to read involves physical and socioemotional development, changes in the ...
Cooperative vs. noncooperative O2-binding curves
Functional Groups of Carbon
Animated! Organisms are classified into groups according to their characteristics
What rate, compounded once every 3 years, is equivalent to 9% effective rate?