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Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Both humans and apes readily engage in learned imitative behavior. Both humans and apes readily engage in learned imitative behavior.
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The Learned Helplessness Procedure The Learned Helplessness Procedure
The activity recorded by PET scans during the performance of newly learned and well-practiced ... The activity recorded by PET scans during the performance of newly learned and well-practiced ...
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Video: baroreceptors

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