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Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Proportions of the genetic and physical maps are similar but not identical Proportions of the genetic and physical maps are similar but not identical
Two wells are filled with related or partially identical antigens. The well on the left contains an ... Two wells are filled with related or partially identical antigens. The well on the left contains an ...
Older mothers more often deliver multiples—twins, triplets, or quads Older mothers more often deliver multiples—twins, triplets, or quads
Share of Hours Worked by Education Level, 1940–2008 Share of Hours Worked by Education Level, 1940–2008
Concordance in MZ and DZ twins for a variety of behavioral disorders Concordance in MZ and DZ twins for a variety of behavioral disorders
1.6 Organisms are made up of cells, each of which contains an identical set of genes. 1.6 Organisms are made up of cells, each of which contains an identical set of genes.
Video: Sperm Formation

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