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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?
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Did you know?
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
Did you know?
Cyanide works by making the human body unable to use oxygen.