Which pairing correctly matches an organ to its typical referred spinal level?

Which pairing correctly matches an organ to its typical referred spinal level?

• A. Heart: T9-T12
• B. Heart: T1-T5
• C. Heart: C3-C5
• D. Heart: L2-L4

Answer: (B)

Visceral pain is often felt at the spinal levels where the organ’s afferent fibers enter the spinal cord. For the heart, these sympathetic afferents arise mainly from the upper thoracic segments, roughly T1 to T5. That means cardiac pain is typically referred to the chest and can radiate along dermatomes in that T1–T5 range, which is why heart-related discomfort is described in those areas. The other spinal levels correspond to different organs or regions, so they don’t match cardiac pain referral. Therefore, the pairing of heart with T1–T5 best fits the typical referred spinal level.

Visceral pain is often felt at the spinal levels where the organ’s afferent fibers enter the spinal cord. For the heart, these sympathetic afferents arise mainly from the upper thoracic segments, roughly T1 to T5. That means cardiac pain is typically referred to the chest and can radiate along dermatomes in that T1–T5 range, which is why heart-related discomfort is described in those areas. The other spinal levels correspond to different organs or regions, so they don’t match cardiac pain referral. Therefore, the pairing of heart with T1–T5 best fits the typical referred spinal level.