|
Author Question: The largest of the beef breeds, the ____________________, can reach weights of up to 4,000 pounds. ... (Read 17 times) |
The familiar sounds of your heart are made by the heart's valves as they open and close.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.