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Did you know?

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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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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There are 60,000 miles of blood vessels in every adult human.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

The ovarian and uterine cycles in a human female. The ovarian and uterine cycles in a human female.
Electron-micrograph of human sperm. Electron-micrograph of human sperm.
Human Eye Diagram Human Eye Diagram
Nine pulse sites on the human body. Nine pulse sites on the human body.
Posterior view of muscles of the human body Posterior view of muscles of the human body
Partial map of disease genes on human chromosome 21 Partial map of disease genes on human chromosome 21
Video: How a Urinalysis is Performed

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