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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?
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.