Lateral Cutaneous Branch of Subcostal Nerve (Left)
Ramus cutaneus lateralis nervi subcostalis
Read moreQuick Facts
Origin: Subcostal nerve.
Course: Pierces the external and internal abdominal oblique muscles.
Branches: Anterior and posterior branches.
Supply: Sin of anterior gluteal region.
Related parts of the anatomy
Origin
The lateral cutaneous branch of anterior ramus of twelfth thoracic nerve arises from the anterior ramus of the twelfth thoracic nerve (or subcostal nerve) roughly along the mid-axillary line.
Course
As the subcostal nerve (or anterior ramus of twelfth thoracic nerve) courses between the transversus abdominis and internal abdominal oblique, it gives off a lateral cutaneous branch. The lateral cutaneous branch pierces the internal and external abdominal oblique muscles and extends towards the iliac crest.
Branches
The lateral cutaneous branch further subdivides into anterior and posterior branches.
Supplied Structures & Function
The lateral cutaneous branch of the subcostal nerve (or anterior ramus of twelfth thoracic nerve) conveys sensory innervation from the skin overlying the anterior gluteal region. See our dermatome map for cutaneous innervation.
