Ask unlimited questions for free
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Medication errors are three times higher among children and infants than with adults.
For a complete list of videos, visit our video library