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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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Your heart beats over 36 million times a year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Abilities that Display Cerebral Lateralization of Function
How to find the anti-derivative of a function (Part 3)
How to determine if a table of values represents a function
Testing motor function of cranial nerve VII - Raise eyebrows