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Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya A maneless male lion, who also has little body hair - from Tsavo East National Park, Kenya
Body cavities Body cavities
Major Muscles of the Body Major Muscles of the Body
Selected skeletal muscles and the Achilles tendon (posterior view). Selected skeletal muscles and the Achilles tendon (posterior view).
Good body mechanics for lifting heavy objects. Good body mechanics for lifting heavy objects.
Hormones Help the Body Regulate Glucose Hormones Help the Body Regulate Glucose
Video: Requirements for nervous signals

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