« previous next »
« previous next »
 

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

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

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

The theoretical design of nature reserves, based on the tenets of island biogeography. The theoretical design of nature reserves, based on the tenets of island biogeography.
A guinea pig being examined by a veterinary medical officer for general health and pulmonary conditi A guinea pig being examined by a veterinary medical officer for general health and pulmonary conditi
The location of the major limbic system structures. In general, they are arrayed near the midline in ... The location of the major limbic system structures. In general, they are arrayed near the midline in ...
How to convert verbal statements into algebraic equations (Part 1) How to convert verbal statements into algebraic equations (Part 1)
General Features of Connective Tissue General Features of Connective Tissue
General Mathematics General Mathematics
Video: Phases of the Female Reproductive Cycle - Hormonal regulation

For a complete list of videos, visit our video library