« previous next »
« previous next »
 

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Divisions of the vertebral column. Divisions of the vertebral column.
Rectification column Schematic diagram Rectification column Schematic diagram
The spinal column. The spinal column.
The two most common deformities of the spinal column are scoliosis and kyphosis. The two most common deformities of the spinal column are scoliosis and kyphosis.
The Intersection of Culture and Personal Beliefs The Intersection of Culture and Personal Beliefs
Posterior column—medial lemniscus pathway Posterior column—medial lemniscus pathway
Video: Generalized life cycles for plants and animals Animation

For a complete list of videos, visit our video library