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.
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Illicit drug use costs the United States approximately $181 billion every year.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Modern jawless fish
Elephant Nose Fish
Box-fish
Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods
Nuts are also a good source of B group vitamins (including folate), and vitamin E