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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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hihihihihihi hihihihihihi
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6 years ago
A patient brought to the emergency room (ER) with severe burns is requesting something for the excruciating pain and is medicated with morphine, which blocks which of the following neuro-transmitters, thus reducing the pain?
 
  a. Enkephalin
  b. Dopamine
  c. Acetylcholine
  d. Substance P
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#1
6 years ago
ANS: D
Substance P is a neurotransmitter in pain transmission pathways. Blocking the release of sub-stance P by morphine reduces pain. The opiates morphine and heroin bind to endorphin and enkephalin receptors on presynaptic neurons. Dopamine is a neurotransmitter involved in activity. Acetylcholine plays a role in nerve conduction presynaptically.
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