« previous next »
« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Play in Four Cultures Across cultures, play is the most common activity in early childhood. Source: Play in Four Cultures Across cultures, play is the most common activity in early childhood. Source:
Demonstrating the use of venipuncture equipment. Holding a butterfly needle in place with a ... Demonstrating the use of venipuncture equipment. Holding a butterfly needle in place with a ...
One of the best examples of charismatic authority is Joan of Arc. In this painting from the early ... One of the best examples of charismatic authority is Joan of Arc. In this painting from the early ...
Unusual base pairings in tRNA: (c, d) Some examples of triple interactions Unusual base pairings in tRNA: (c, d) Some examples of triple interactions
The radius of a semicircle is 2 kilometers. What is the semicircle's area? The radius of a semicircle is 2 kilometers. What is the semicircle's area?
Video: Tuberculosis Testing

For a complete list of videos, visit our video library