Which nerve fibers primarily transmit fast, sharp nociceptive pain from tissue injury to the CNS?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the Pain, Opioids, and Neuropsychiatric Pharmacology Test. Explore with flashcards and multiple choice questions; each query comes with hints and explanations. Prepare to excel in your exam!

Multiple Choice

Which nerve fibers primarily transmit fast, sharp nociceptive pain from tissue injury to the CNS?

Explanation:
The fastest, sharp pain from tissue injury is carried by thinly myelinated A-delta fibers. Their light myelination allows rapid conduction of the nociceptive signal, producing the quick, well-localized “first pain” that lets you identify the exact location of the injury and respond with a rapid withdrawal. By contrast, unmyelinated C fibers transmit slower, dull, aching pain; A-beta fibers carry non-nociceptive touch; interneurons in the spinal cord help process signals but are not the primary carriers of this fast pain.

The fastest, sharp pain from tissue injury is carried by thinly myelinated A-delta fibers. Their light myelination allows rapid conduction of the nociceptive signal, producing the quick, well-localized “first pain” that lets you identify the exact location of the injury and respond with a rapid withdrawal. By contrast, unmyelinated C fibers transmit slower, dull, aching pain; A-beta fibers carry non-nociceptive touch; interneurons in the spinal cord help process signals but are not the primary carriers of this fast pain.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy