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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
If you could remove all of your skin, it would weigh up to 5 pounds.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.