|
|
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.