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Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Organization of the nervous system. Organization of the nervous system.
Procedures and Diagnostic Tests Related to the Female Reproductive System Procedures and Diagnostic Tests Related to the Female Reproductive System
The sympathetic and parasympathetic divisions of the autonomic nervous system. The sympathetic and parasympathetic divisions of the autonomic nervous system.
The nervous system. The nervous system.
Solar System Solar System
Insect tracheal system. Chitin rings reinforce branching, air-filled tubes in such respiratory syste Insect tracheal system. Chitin rings reinforce branching, air-filled tubes in such respiratory syste
Video: Vascular tissues in a corn stem and a buttercup root

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