"The phrenic nerve has a variable origin from the C3, C4 and C5 spinal nerve roots. It can arise from one, two or all three of these nerve roots. The most common pattern is the nerve arising from only the C3 and C4 nerve roots.1"
"Variably to abdominal structures: liver, gallbladder, adrenal gland, oesophagus, stomach and pancreas; the phrenic nerve also contains sympathetic fibres.5"
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"Function"
"The phrenic nerve has a variable origin from the C3, C4 and C5 spinal nerve roots. It can arise from one, two or all three of these nerve roots. The most common pattern is the nerve arising from only the C3 and C4 nerve roots.1"
"The phrenic nerve has a variable origin from the C3, C4 and C5 spinal nerve roots. It can arise from one, two or all three of these nerve roots. The most common pattern is the nerve arising from only the C3 and C4 nerve roots.1"
"Variably to abdominal structures: liver, gallbladder, adrenal gland, oesophagus, stomach and pancreas; the phrenic nerve also contains sympathetic fibres.5"
"Referred pain: irritation of any structures that receives sensory innervation from the phrenic can refer to the C3 and C4 dermatome (typically the neck, shoulder and arm). Thus, in patients with shoulder pain that does not increase with pressure/movement, diaphragmatic and subdiaphragmatic pathologies should be considered.5"
"Referred pain: irritation of any structures that receives sensory innervation from the phrenic can refer to the C3 and C4 dermatome (typically the neck, shoulder and arm). Thus, in patients with shoulder pain that does not increase with pressure/movement, diaphragmatic and subdiaphragmatic pathologies should be considered.5"
"There is variably an accessory phrenic nerve that joins the phrenic in the thorax.4"
"anterior: sternocleidomastoid muscle, inferior belly of omohyoid muscle, internal jugular vein, transverse cervical artery, suprascapular artery, thoracic duct (for left phrenic only), subclavian vein (at base of neck)"
"Variably to abdominal structures: liver, gallbladder, adrenal gland, oesophagus, stomach and pancreas; the phrenic nerve also contains sympathetic fibres.5"