Question

The pleasant feeling called a "high" produced by using narcotics is due to: A) the drug flooding neurotransmitter synapses with dopamine. B) an increase in the release of the neurotransmitter serotonin. C) the drug attaching to sites normally receptive to endorphins. D) the opponent process caused by IV injection.

Answer 1

Answer: C) The drug attaching to sites normally receptive to endorphins

Explanation: Narcotics such as opioids bind to opioid receptors in the Central nervous system. These receptors are normally bound to by endorphins, but when narcotics bind to them, they mimic the effects of endorphins (act as agonists), leading to feelings of euphoria and pain relief.