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nmdcat.online July 7, 2026

The phenomenon of referred pain, where visceral pain is felt in a specific somatic area, occurs because

A. Visceral and somatic pain fibers converge on the same interneurons in the spinal cord
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B. The brain lacks receptors for internal organs
C. Pain fibers from organs travel directly to the skin
D. Somatic pain is stronger than visceral pain

📝 Explanation

Referred pain happens when sensory fibers from an organ (e.g., heart) and a somatic region (e.g., left arm) synapse on the same second-order neurons. The brain interprets the pain as coming from the more frequently stimulated somatic area.

📖 Additional Information

  • Visceral and somatic pain fibers converge on the same interneurons in the spinal cord
  • The brain lacks receptors for internal organs
  • Pain fibers from organs travel directly to the skin
  • Somatic pain is stronger than visceral pain

Referred pain happens when sensory fibers from an organ (e.g., heart) and a somatic region (e.g., left arm) synapse on the same second-order neurons. The brain interprets the pain as coming from the more frequently stimulated somatic area.

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