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Anterior Cutaneous Branches of Intercostal Nerves (Left)
Nervous System

Anterior Cutaneous Branches of Intercostal Nerves (Left)

Rami cutanei anteriores nervi intercostales

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Description

The anterior cutaneous branches of the intercostal nerves arise as the terminal portion of the intercostal nerve, as it pierces through the anterior layer of the rectus sheath to reach the skin. The anterior cutaneous branches give rise to both medial and lateral branches that span out over the anterior part of the thoracic and abdominal wall.

The anterior cutaneous branches are collectively sensory nerves that receive information predominantly from the anterior thoracic and abdominal wall. For cutaneous distribution of the spinal nerves, see the dermatome map (Keegan and Garrett, 1948; Foerster, 1933).

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References

Foerster, O. (1933) 'The Dermatomes in Man', Brain, 56(1), pp. 1-39.

Keegan, J. J. and Garrett, F. D. (1948) 'The Segmental Distribution of the Cutaneous Nerves in the Limbs of Man', The Anatomical Record, 102(4), pp. 409-437.

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Intercostal Nerve

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The intercostal nerve frequently runs within the middle of the intercostal space (73% of the time) and occasionally courses along the inferior aspect of the intercostal space just above the subjacent rib (Hardy, 1988).

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