« previous next »
« previous next »
 

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?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an
Solar Harvesting Device Solar Harvesting Device
Directional selection pushes a phenotype one way or another. Directional selection pushes a phenotype one way or another.
Commons Abbreviations for Weights and Measures Commons Abbreviations for Weights and Measures
Disruptive selection eliminates midrange forms of a trait Disruptive selection eliminates midrange forms of a trait
Video: Interview with an Anorexic Woman (Part 1 of 2)

For a complete list of videos, visit our video library