« previous next »
« previous next »
 

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

The nitrogen cycle. The five main parts of the nitrogen cycle are: The nitrogen cycle. The five main parts of the nitrogen cycle are:
Reconstructed Australopithecus afarensis spine shows that species walked upright. Reconstructed Australopithecus afarensis spine shows that species walked upright.
The “Old Man” from La Chapelle shows evidence of extensive tooth loss and bone resorption. The “Old Man” from La Chapelle shows evidence of extensive tooth loss and bone resorption.
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d
This illustration shows the decibel level in various locations and associated with different ... This illustration shows the decibel level in various locations and associated with different ...
A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ... A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ...
Video: Conjunctivitis

For a complete list of videos, visit our video library