Thi?t b? ho?t ??ng không s? d?ng ?i?n n?ng nên giúp ti?t ki?m ???c m?t kho?n chi phí r?t l?n. The phrenic nerve is essential for diaphragm movement, originating from spinal nerves C3 to C5, which is answerable for its finish motor innervation. This innervation will allow