| phrenic veins | See: inferior phrenic vein, superior phrenic veins. (05 Mar 2000) |
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| crossed phrenic phenomenon | Hemisection of the cord above the exit of the phrenic nerve paralyzes the ipsilateral half of the diaphragm; if the contralateral phrenic nerve is then sectioned or blocked, contractions on the ipsilateral side are resumed. (05 Mar 2000) |
| superior phrenic artery | <anatomy, artery> One of a pair of small arteries given off from the thoracic aorta just superior to the diaphragm; distribution, diaphragm; anastomoses, musculophrenic, pericardiacophrenic, and inferior phrenic. Synonym: arteria phrenica superior. (05 Mar 2000) |
| superior phrenic lymph nodes | Three groups of small nodes, anterior, middle, and posterior, on the upper surface of the diaphragm; they receive afferents from the liver, diaphragm, and intercostal spaces and send efferents to parasternal and posterior mediastinal nodes. Synonym: nodi lymphatici phrenici superiores, diaphragmatic nodes. (05 Mar 2000) |
| superior phrenic veins | Small veins that drain the upper surface of the diaphragm; they are tributaries of the azygos and hemiazygos veins. Synonym: venae phrenicae superiores. (05 Mar 2000) |
| inferior phrenic artery | <anatomy, artery> Origin, the first paired branch from the abdominal aorta inferior to the diaphragm; distribution, diaphragm; anastomoses, superior phrenic, internal thoracic, and musculophrenic. Synonym: arteria phrenica inferior. (05 Mar 2000) |
| inferior phrenic lymph nodes | Small lymph nodes associated with the inferior phrenic vessels. Synonym: nodi lymphatici phrenici inferiores. (05 Mar 2000) |
| inferior phrenic vein | <anatomy, vein> The vein that drains the substance of the diaphragm and empties on the right side into the inferior vena cava, on the left side into the left suprarenal vein; often a second vein on the left side passes transversely across the diaphragm anterior to the oesophageal hiatus to enter the inferior vena cava. Synonym: vena phrenica inferior. (05 Mar 2000) |