Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Elsevier
Publish with us
Lateral Cutaneous Branch of Fifth Intercostal Nerve (Right)
Nervous System

Lateral Cutaneous Branch of Fifth Intercostal Nerve (Right)

Ramus cutaneus lateralis nervi intercostalis quinti

Read more

Origin

The lateral cutaneous branch of anterior ramus of fifth thoracic nerve (or fifth intercostal nerve) arises from the anterior ramus of the fifth thoracic nerve roughly along the mid-axillary line.

Course

The lateral cutaneous branch may travel for a short distance with its parent nerve (the anterior ramus) within the intercostal space. It then pierces the thoracic wall through the internal and external intercostal muscles, emerging just anterior to the serratus anterior muscle.

Branches

The lateral cutaneous branch further subdivides into anterior and posterior branches. The anterior branches extend towards the pectoralis major, while the posterior branches extend backwards towards the latissimus dorsi muscle.

Supplied Structures & Function

The lateral cutaneous branch of the fifth intercostal nerve (or anterior ramus of fifth thoracic nerve) conveys sensory innervation from the skin overlying the fifth intercostal space. See our dermatome map for cutaneous innervation.

Learn more about this topic from other Elsevier products

Intercostal Nerve

ScienceDirect image

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).

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy