« previous next »
« previous next »
 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Rocks are the most common geosphere materials, and can be fun, dangerous, beauti Rocks are the most common geosphere materials, and can be fun, dangerous, beauti
A Listing of Repeat Units for 10 of the More Common Polymeric Materials A Listing of Repeat Units for 10 of the More Common Polymeric Materials
DOT placarding requirements: Table 1 materials must be placarded in any quantity, and Table 2 ... DOT placarding requirements: Table 1 materials must be placarded in any quantity, and Table 2 ...
Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ... Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ...
Animated The one-way flow of energy and cycling of materials in the world of life Animated The one-way flow of energy and cycling of materials in the world of life
The flow of energy and the cycling of materials maintain nature’s organization The flow of energy and the cycling of materials maintain nature’s organization
Video: baroreceptors

For a complete list of videos, visit our video library