Which fiber type has free nerve endings?

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Prepare for the Anesthesia Pharm Exam 1 with our interactive quizzes. Study with detailed explanations and multiple-choice questions to ensure success on your examination day!

Multiple Choice

Which fiber type has free nerve endings?

Explanation:
Free nerve endings are bare, non-encapsulated endings of nociceptive fibers. The small, unmyelinated C fibers are the classic carriers of slow, dull pain and temperature signals, and their terminals are free nerve endings. That direct, non-specialized ending is what gives C fibers their nociceptive role with free-ending receptors. (Note: A-delta fibers also carry pain signals and have free endings, but the emphasis in this context is on C fibers as the typical free-ending nociceptors.)

Free nerve endings are bare, non-encapsulated endings of nociceptive fibers. The small, unmyelinated C fibers are the classic carriers of slow, dull pain and temperature signals, and their terminals are free nerve endings. That direct, non-specialized ending is what gives C fibers their nociceptive role with free-ending receptors. (Note: A-delta fibers also carry pain signals and have free endings, but the emphasis in this context is on C fibers as the typical free-ending nociceptors.)

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