Ask unlimited questions for free
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The familiar sounds of your heart are made by the heart's valves as they open and close.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
For a complete list of videos, visit our video library