Pectoral Region CUTANEOUS INNERVATION

NEET PG Anatomy
#1

Pectoral Region

CUTANEOUS INNERVATION

The skin of the pectoral region is supplied by the following cutaneous nerves:

  1. The skin above the horizontal line drawn at the level of sternal angle is supplied by supraclavicular nerves (C3 and C4).

  2. The skin below this horizontal line is supplied by anterior and lateral cutaneous branches of the 2nd–6th intercostal nerves (T2–T6).

SPECIAL FEATURES

The area supplied by C4 spinal segment directly meets the area supplied by T2 spinal segment. This is because the nerves derived from C5–T1 spinal segments form brachial plexus to supply the upper limb.