Nerves

• Radial nerve

  
• Intercostal nerves

  • Group of n that arise from ant primary rami thoracic 1-11 spinal nerve
  • t12 forms subcostal nerve
  • Each intercostal nerve runs along inferior border of rib corresponding to its segment. They travel in the intercostal spaces, positioned between the internal and innermost intercostal muscles.
  • They are accompanied by intercostal artery and vein, forming the neurovascular bundle.

  
• Intercostal nerves branche

  • muscular branch: supply intercostal m: transversus thoracis and serratus
  • sensory branch: Supply intercostal muscles and parietal pleura.
  • lateral cutaneous branch: Arise near mid-axillary line, supplying the skin of the lateral thoracic and abdominal walls. Divides into ant and post divisions.
  • Anterior Cutaneous Branches: Terminate near sternum, supplying skin of anterior thoracic and abdominal walls.
  • communicating branch: connects with thoracic sympathtetic ganglia

  
• Intercostal nerves branches