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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.

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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.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

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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.

A very high-resolution texture of the Moon, including a normal map A very high-resolution texture of the Moon, including a normal map
These school-age childrean are eating a health snack These school-age childrean are eating a health snack
Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo Mammography. (b) A mammogram. A tumor is visible in this mammogram, indicated by the arrow in the lo
Comparison of Principles of Abstinence-Only and Comprehensive Sex Education in the Public School Sys Comparison of Principles of Abstinence-Only and Comprehensive Sex Education in the Public School Sys
Shift to one side. Let the recipient’s arm hang down. Knead upper and lower arm muscles from ... Shift to one side. Let the recipient’s arm hang down. Knead upper and lower arm muscles from ...
100 days in school 100 days in school
Video: Carbohydrate digestion - mouth and stomach & pancreas and small intestine

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