ANATOMY

Detailed explanation-1: -The phrenic nerve is among the most important nerves in the body due to its role in respiration. The phrenic nerve provides the primary motor supply to the diaphragm, the major respiratory muscle. Phrenic nerve injury, such as may occur from cardiothoracic surgery, can lead to diaphragmatic paralysis or dysfunction.

Detailed explanation-2: -The phrenic nerves provide motor innervation to the diaphragm and work in conjunction with secondary respiratory muscles (trapezius, pectoralis major, pectoralis minor, sternocleidomastoid, and intercostals) to allow respiration.

Detailed explanation-3: -Your phrenic nerve plays a critical role in your respiratory system to aid breathing. It’s the only nerve in your nervous system that provides motor (movement) function to your diaphragm. It sends signals that cause your diaphragm to expand and contract. These movements allow your lungs to inhale and exhale air.

Detailed explanation-4: -The phrenic nerve is a mixed motor/sensory nerve that originates from the C3-C5 spinal nerves in the neck. The nerve is important for breathing because it provides exclusive motor control of the diaphragm, the primary muscle of respiration.

Detailed explanation-5: -The phrenic nerve controls the diaphragm, the dome-shaped muscle that is primarily responsible for breathing. Contraction of the diaphragm expands the lungs and draws air into them. The phrenic nerve performs this function multiple times per minute throughout your lifetime.