« previous next »
« previous next »
 

Did you know?

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 eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Primary production is positively correlated with the evapotranspiration rate. Primary production is positively correlated with the evapotranspiration rate.
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women. Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
Many fathers and infants form secure attachments. Fathers’ style of interaction differs somewhat ... Many fathers and infants form secure attachments. Fathers’ style of interaction differs somewhat ...
Older people who exercise cognitive skills, like these chess players, retain those skills well into ... Older people who exercise cognitive skills, like these chess players, retain those skills well into ...
Comparison of Type 1 and Type 2 Diabetes Mellitus Comparison of Type 1 and Type 2 Diabetes Mellitus
Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex. Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex.
Video: Homologous chromosomes during prophase I - Animation

For a complete list of videos, visit our video library