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Author Question: What substance, in different concentrations, directs developmental fates? (Read 18 times) |
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There are 60,000 miles of blood vessels in every adult human.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.