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The phrenic nerve originates through the cervical spinal roots C3, C4, and C5, and it's essential for initiating the respiration procedure. This nerve serves the two motor capabilities for diaphragm contraction and sensory features for that pericardium and mediastinal pleura, including the phrenic nerves.Đầu nối Sang-a, NKC Súng phun sơn Dev