« previous next »
« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

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

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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.

By middle adulthood, most individuals and established and confident in their careers By middle adulthood, most individuals and established and confident in their careers
Prisoners from the front (1866) established Winslow Homer's reputation for spare truthfulness. Prisoners from the front (1866) established Winslow Homer's reputation for spare truthfulness.
Vocational interests seem to be established well before adulthood, and young people of all ages ... Vocational interests seem to be established well before adulthood, and young people of all ages ...
In Hindu marriages, the roles of husband and wife are firmly established. Neither this woman, whom I ... In Hindu marriages, the roles of husband and wife are firmly established. Neither this woman, whom I ...
What will be the pH of the solution once equilibrium is established? What will be the pH of the solution once equilibrium is established?
Twenty percent of the automobiles inspected at a state inspection station required repairs to ... Twenty percent of the automobiles inspected at a state inspection station required repairs to ...
Video: Sperm Formation

For a complete list of videos, visit our video library