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Author Question: Trace the impulse pattern of conduction in sequence through the heart. (Separate letters by a comma ... (Read 42 times) |
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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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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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Your heart beats over 36 million times a year.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.