Ask unlimited questions for free
Blood is approximately twice as thick as water because of the cells and other components found in it.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
The human body produces and destroys 15 million blood cells every second.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
For a complete list of videos, visit our video library