There are more nerve cells in one human brain than there are stars in the Milky Way.
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Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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If you could remove all of your skin, it would weigh up to 5 pounds.
The male reproductive system
Development of the Endocrine System
Components of the Lymphatic System
The central nervous system is composed of the brain and the spinal cord
Insect tracheal system. Chitin rings reinforce branching, air-filled tubes in such respiratory syste