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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.