| Riolan's anastomosis | The specific portion of the marginal artery of the colon connecting the middle and left colic arteries. Synonym: Riolan's arc. (05 Mar 2000) |
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| Riolan's arc | The series of arterial arches formed in the mesentery by anastomoses between adjacent jejunal and ileal arteries and from which vasa recta arise. The arterial arcades of the ileum are shorter and more complex than those of the jejunum. See: arterial arches of ileum, arterial arches of jejunum. Synonym: intermesenteric arterial anastomosis, Riolan's arc, Riolan's arcades. (05 Mar 2000) |
| Riolan's arcades | The series of arterial arches formed in the mesentery by anastomoses between adjacent jejunal and ileal arteries and from which vasa recta arise. The arterial arcades of the ileum are shorter and more complex than those of the jejunum. See: arterial arches of ileum, arterial arches of jejunum. Synonym: intermesenteric arterial anastomosis, Riolan's arc, Riolan's arcades. (05 Mar 2000) |
| Riolan's bones | Several small sutural bone's sometimes present in the petro-occipital suture. (05 Mar 2000) |
| Riolan's muscle | <anatomy> Marginal fibres of the palpebral part of the orbicularis oculi muscle. Synonym: cremaster muscle. (05 Mar 2000) |
| Riolan, Jean | <person> French anatomist and botanist, 1577-1657. See: Riolan's anastomosis, Riolan's arc, Riolan's arcades, Riolan's bones, Riolan's bouquet, Riolan's muscle. (05 Mar 2000) |
| arc of riolan | <radiology> Inconstant anastomotic artery between middle and left colic aa. (12 Dec 1998) |
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