« previous next »
« previous next »
 

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Administration of the Rinne test. Administration of the Rinne test.
A Test for the Blind Spot A Test for the Blind Spot
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Heel-to-shin test Heel-to-shin test
Allen’s test Allen’s test
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Covalent bonds - role in the body

For a complete list of videos, visit our video library