What is the primary mechanism by which opioids provide analgesia in dogs and cats, and name a common antagonist?

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Study for the Veterinary Pharmacology Drugs Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the primary mechanism by which opioids provide analgesia in dogs and cats, and name a common antagonist?

Explanation:
Opioids give analgesia by activating mu-opioid receptors in the central nervous system, especially in the spinal cord and brain. This activation dampens the transmission of pain signals and alters the brain’s perception of pain by reducing excitatory neurotransmitter release and increasing neuronal inhibition. A commonly used antagonist to reverse opioid effects is naloxone, which competes for mu receptors and rapidly reverses analgesia (and other opioid effects like respiratory depression) when needed.

Opioids give analgesia by activating mu-opioid receptors in the central nervous system, especially in the spinal cord and brain. This activation dampens the transmission of pain signals and alters the brain’s perception of pain by reducing excitatory neurotransmitter release and increasing neuronal inhibition. A commonly used antagonist to reverse opioid effects is naloxone, which competes for mu receptors and rapidly reverses analgesia (and other opioid effects like respiratory depression) when needed.

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