| Arantius' ligament | A thin fibrous cord, lying in the fissure of the ligamentum venosum, the remains of the ductus venosus of the foetus. Synonym: Arantius' ligament, ligamentum ductus venosi, venous ligament. (05 Mar 2000) |
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| Arantius' nodule | A nodule at the centre of the free border of each semilunar valve at the beginning of the pulmonary artery and aorta. Synonym: nodulus valvulae semilunaris, Arantius' nodule, Bianchi's nodule, corpus arantii, Morgagni's nodule. (05 Mar 2000) |
| Arantius' ventricle | Inferior part of the rhomboid fossa; the narrow lower end of the fourth ventricle between the two clavae. Synonym: Arantius' ventricle. Origin: L. Writing pen (05 Mar 2000) |
| Arantius, Giulio | <person> Italian anatomist and physician, 1530-1589. See: Arantius' ligament, Arantius' nodule, Arantius' ventricle, corpus arantii, ductus venosus arantii. (05 Mar 2000) |