The<unk>  is the part of the brachial plexus formed by of the anterior division of the lower trunk (C8-T1). Its name comes from it being<unk>  to the axillary artery as it passes through the axilla. The other<unk> s of the brachial plexus are the posterior<unk>  and lateral<unk> . The<unk>  gives rise to the following nerves from proximal to distal:<unk>  pectoral nerve (C8-T1)<unk>  brachial cutaneous nerve (T1)<unk>  antebrachial cutaneous nerve (C8-T1)<unk>  head of<unk>  nerve (C8-T1) other part of<unk>  nerve comes from lateral<unk>  *ulnar nerve (C8-T1, occasionally C7)
Medial cord
Posterior cord
Barrel cortex
Periaqueductal gray
Midbrain tegmentum
Forebrain
Hindbrain
Anterior median fissure of spinal cord