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Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

External and cross-sectional view of an infarct caused by a myocardial infarction. External and cross-sectional view of an infarct caused by a myocardial infarction.
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
Muscles of the right hand side view Muscles of the right hand side view
Superior view of axis and right lateral view of axis Superior view of axis and right lateral view of axis
Development of the Eyes and Ears: External View - 28 days Embryo Development of the Eyes and Ears: External View - 28 days Embryo
Video: Fertilization and Development

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