Phrenic
Supplies the diaphragm
The phrenic nerve is a nerve that arises from the spinal cord at cervical spine levels C3 to C5. It passes through the thorax to innervate the diaphragm muscle, controlling its movement during breathing. The diaphragm is the most important muscle involved in breathing, and the contraction and relaxation of the diaphragm are controlled by the phrenic nerve. The phrenic nerve also provides sensory information to the brain from the diaphragm and the surrounding structures.
Damage to the phrenic nerve can result in paralysis or weakness of the diaphragm, leading to difficulty in breathing and respiratory distress. Causes of phrenic nerve injury may include trauma, surgery, tumors, infections, or neurological diseases. Treatment options may include medications, surgery, or therapy to improve lung function.
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