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Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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There are more sensory neurons in the tongue than in any other part of the body.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

Competition can be (a) direct, or (b) indirect interaction among individuals of the same or differen Competition can be (a) direct, or (b) indirect interaction among individuals of the same or differen
Identifying Individuals Identifying Individuals
The vulva, sagittal section illustrating how the labia majora and labia minora cover and protect the The vulva, sagittal section illustrating how the labia majora and labia minora cover and protect the
Intelligence and Education Intelligence and Education
Stressing that education reproduces a country’s social class system, conflict theorists point out ... Stressing that education reproduces a country’s social class system, conflict theorists point out ...
Pus-forming infection. Such infections occur more frequently in individuals with immunoglobulin ... Pus-forming infection. Such infections occur more frequently in individuals with immunoglobulin ...
Video: A Human Karyotype Preparation Animation

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