« previous next »
« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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?

In 1864, the first barbiturate (barbituric acid) was synthesized.

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.

Major structures of the human brain. Major structures of the human brain.
The hierarchy of biological classification's eight major taxonomic ranks. The hierarchy of biological classification's eight major taxonomic ranks.
The Major Subcortical Connections of the Hippocampal Formation The Major Subcortical Connections of the Hippocampal Formation
Major Areas Tested on the CMA and RMA Examinations Major Areas Tested on the CMA and RMA Examinations
Pollution in the Industrializing Nations has become a major problem. The air in Beijing is hazardous ... Pollution in the Industrializing Nations has become a major problem. The air in Beijing is hazardous ...
Major Minerals Major Minerals
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library