| arteriae centrales posteromediales | The interpeduncular perforating branches, several small branches from the precommunical part of the posterior cerebral artery supplying the posterior medial part of the midbrain. Synonym: arteriae centrales posteromediales. (05 Mar 2000) |
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| arteriae gastricae breves | Four or five small arteries given off from the splenic, passing via the gastrosplenic ligament to the fundus of the stomach along the greater curvature, and anastomosing with the other arteries in that region. Synonym: arteriae gastricae breves, vasa brevia. (05 Mar 2000) |
| arteriae helicinae penis | The coiled terminal branches of the deep and dorsal arteries of the penis. Parasympathetic stimulation causes them to uncoil, allowing blood at arterial pressure to fill the cavernous tissue causing erection. Synonym: arteriae helicinae penis. (05 Mar 2000) |
| arteriae ileales | Origin, superior mesenteric; distribution, ileum; anastomoses, other branches of superior mesenteric. Synonym: arteriae ileales. (05 Mar 2000) |
| arteriae insulares | Branches from the insular part of the middle cerebral artery distributed to the cortex of the insula. Synonym: arteriae insulares. (05 Mar 2000) |
| arteriae intercostales posteriores I et II | posterior intercostal arteries 1-2 |
| arteriae intercostales posteriores III-XI | posterior intercostal arteries 3-11 |
| arteriae interlobares renis | The branches of the segmental arteries of the kidney; they run between the renal lobes and give rise to the arcuate arteries. Synonym: arteriae interlobares renis. (05 Mar 2000) |
| arteriae interlobulares | Arteries that pass between lobules of an organ. See: interlobular arteries of liver, interlobular arteries of kidney. Synonym: arteriae interlobulares. (05 Mar 2000) |
| arteriae intestinales | See: ileal arteries, jejunal arteries. (05 Mar 2000) |
| arteriae jejunales | Origin, superior mesenteric; distribution, jejunum; anastomoses, by a series of arches with each other and with ileal arteries. Synonym: arteriae jejunales. (05 Mar 2000) |
| arteriae labiales anteriores | The anterior labial branches, branches of the external pudendal artery to the labium majus. Synonym: rami labiales anteriores arteriae pudendae externae, arteriae labiales anteriores. (05 Mar 2000) |
| arteriae lumbales imae | Origin, middle sacral; distribution, sacrum and iliac muscle; anastomosis, deep circumflex iliac artery. Synonym: arteriae lumbales imae. (05 Mar 2000) |
| arteriae malleolares posteriores laterales | Lateral malleolar branches of peroneal artery. Synonym: rami malleolares laterales, arteriae malleolares posteriores laterales, posterior peroneal arteries. (05 Mar 2000) |
| arteriae malleolares posteriores mediales | Medial malleolar branches of posterior tibial artery. Synonym: rami malleolares mediales, arteriae malleolares posteriores mediales. (05 Mar 2000) |