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A person took pain-relieving medication for a sore throat. A short while after taking the medicine, the pain was dramatically reduced. A few hours later, the pain came back.

Thinking about the parts and functions of the nervous system, which of the following is the best explanation of how pain-relieving medicine works?

A. Pain relief medication immediately heals the affected area, which stops the pain.
B. Pain relief medication temporarily stops the brain's ability to receive messages from the rest of the nervous system.
C. Pain relief medication temporarily blocks the transmission of pain messages from sensory neurons.
D. Pain relief medication temporarily speeds up the transmission of pain messages from motor neurons.

Sagot :

Final answer:

Pain relief medication works by temporarily blocking the transmission of pain messages from sensory neurons.


Explanation:

Pain relief medication works by temporarily blocking the transmission of pain messages from sensory neurons. When a person takes pain-relieving medication, such as NSAIDs or opioids, these drugs act on the nociceptors to inhibit the transmission of pain signals. This blocking effect helps reduce the perception of pain. However, it's important to note that pain perception is not solely based on neural messages but also involves factors like perception and distraction.


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