Pain begins when an intense stimulus activates sensory fibers called _____ in the skin, muscles, or internal organs.

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Quizplus · Accepted Answer

Nociceptors are specialized sensory nerve fibers that respond to noxious (painful) stimuli such as extreme temperatures, pressure, or chemicals. Once activated, nociceptors send signals to the spinal cord and brain, which ultimately results in the sensation of pain. Pacinian corpuscles are responsible for detecting pressure, proprioceptors are sensory receptors that give information about joint angle, muscle length, and muscle tension and D-delta fibers and B fibers are not involved in pain perception.

Pain Begins When an Intense Stimulus Activates Sensory Fibers Called