The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
Within three days of death, the enzymes that once digested your food begin to eat you.
22
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
Your thumb is about the same size as your nose.
124
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
The average sperm cell swims at 8 inches per hour.
76


