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Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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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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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Death's-head Hawkmoth (Acherontia lachesis), an old bleached specimen still showing the classic Death's-head Hawkmoth (Acherontia lachesis), an old bleached specimen still showing the classic
19 weeks old human fetus 19 weeks old human fetus
Children Understanding Death Children Understanding Death
The photo shows an ultrasound image of a fetus of about 20 weeks’ gestational age. The photo shows an ultrasound image of a fetus of about 20 weeks’ gestational age.
Perspective analysis of Duccio, Annunciation of the Death of the Virgin, from the Maestà ... Perspective analysis of Duccio, Annunciation of the Death of the Virgin, from the Maestà ...
Fetus Development Weekly vs. Monthly Fetus Development Weekly vs. Monthly
Video: Krebs cycle : Formation of acetyl coenzyme A and Electron transport chain

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