Anterior Cutaneous Branch of Second Intercostal Nerve (Right)
Ramus cutaneus anterior nervi intercostalis secundi
Read moreQuick Facts
Origin: Second intercostal nerve.
Course: Pierces the anterior chest wall.
Branches: Medial and lateral branches.
Supply: Skin of the anterior thoracic wall.
Related parts of the anatomy
Origin
The anterior cutaneous branch of anterior ramus of second thoracic nerve arises as the terminal branch of the second intercostal nerve.
Course
As the anterior ramus of second thoracic nerve reaches the anterior portion of the intercostal space, the parasternal line, it pierces through the internal intercostal muscle and external intercostal membrane, and subsequently the pectoralis major muscle, as the anterior cutaneous branch.
Branches
The anterior cutaneous branches divide into medial and lateral branches that extend over the sternum and pectoralis major muscle, respectively.
Supplied Structures & Function
The anterior cutaneous branch conveys sensory information from the skin of the anterior thoracic wall. See our dermatome map for cutaneous innervation.
The anterior cutaneous nerve of anterior ramus of second thoracic nerve may connect to the medial supraclavicular nerves of the cervical plexus.
Learn more about this topic from other Elsevier products
Intercostal Nerve
Slipping rib syndrome is produced by impingement of an intercostal nerve between two costal cartilages, secondary to the subluxation of an interchondral articulation.
