The phrenic nerve provides the primary motor innervation to the diaphragm and is essential for normal respiratory function. Arising from spinal roots C3 to C5, it descends through the neck on the anterior surface of the scalene muscle before entering the thorax. It travels between the lungs and heart, ultimately reaching the diaphragm to stimulate its contraction during inspiration. Because it also carries sensory fibers, it provides sensation to the central diaphragm, mediastinal pleura, and pericardium. Injury to the phrenic nerve can lead to diaphragmatic paralysis and breathing difficulties, highlighting its critical role in ventilation. Phrenic Nerve Motor Innervation to the Diaphragm Diagram - Chart - diagrams and charts with labels. This diagram depicts Phrenic Nerve Motor Innervation to the Diaphragm and explains the details of Phrenic Nerve Motor Innervation to the Diaphragm.
Phrenic Nerve Motor Innervation to the Diaphragm
