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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?
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").