« previous next »
« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

GI series. (a) Upper GI series begins with a barium swallow, barium shake, or barium meal. (b) Lower GI series. (a) Upper GI series begins with a barium swallow, barium shake, or barium meal. (b) Lower
Results are shown for proteins denatured by two different environmental changes Results are shown for proteins denatured by two different environmental changes
Konrad Lorenz is shown with his baby geese. Konrad Lorenz is shown with his baby geese.
The Number of Children Americans Think Are Ideal The Number of Children Americans Think Are Ideal
A corroded electronic throttle control assembly shown with the cover removed. A corroded electronic throttle control assembly shown with the cover removed.
Concepts related to obesity and physical inactivity Concepts related to obesity and physical inactivity
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library