A patient receives morphine and shows signs of toxicity. The prescriber orders naloxone [Narcan] to reverse the effects of the morphine. The nurse understands that the naloxone reverses morphine toxicity by which action on morphine receptor sites?
A) Blocking transmitter reuptake
B) Inhibiting transmitter release
C) Interfering with transmitter storage
D) Preventing activation of receptors

Question

Quizplus · Accepted Answer

Morphine and its antagonist, naloxone, act directly at the same receptors. Morphine causes activation, and naloxone prevents activation. Neither morphine nor naloxone acts to alter transmitter reuptake, release, or storage.

A Patient Receives Morphine and Shows Signs of Toxicity