« previous next »
« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

A child with a hearing impairment wears a hearing aid (as noted in his left ear). A child with a hearing impairment wears a hearing aid (as noted in his left ear).
In 1879 an army officer founded the Carlisle School in Pennsylvania to “civilize” young Indians. The In 1879 an army officer founded the Carlisle School in Pennsylvania to “civilize” young Indians. The
Jeremy Bentham (1748–1832). Jeremy Bentham (1748–1832).
Growth in the demand for oil from the developing world Growth in the demand for oil from the developing world
Cost of Going to School Cost of Going to School
The best thing about back to school The best thing about back to school
Video: Muscular Dystrophy

For a complete list of videos, visit our video library