From Wikipedia, the free encyclopedia
The left coronary artery, also abbreviated LCA, arises from the aorta above the left cusp of the aortic valve.
It typically runs for 1 to 25 mm and then bifurcates into the left anterior descending (LAD) artery and the left circumflex artery (LCX).
The part that is between the aorta and the bifurcation only is known as the left main artery (LM), while the term 'LCA' might refer to just the left main, or to the left main and all its eventual branches.
If an artery arises from the left main between the LAD and LCX, it is known as the ramus intermedius. The ramus intermedius occurs in 37% of the general population, and is considered a normal variant.
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| Arteries of thorax, abdomen, and pelvis edit |
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pulmonary - aorta - ascending aorta
right coronary (sinuatrial nodal, atrioventricular nodal, atrial, right marginal, posterior interventricular)
left coronary (anterior interventricular, left circumflex, left marginal)
aortic arch - brachiocephalic - thyreoidea ima - common carotid | (Gray's s141-Gray's s143)
DESCENDING AORTA / THORACIC AORTA: bronchial - esophageal - posterior intercostal - subcostal | (Gray's s153)
ABDOMINAL AORTA: Anterior - celiac: left gastric
splenic: pancreatic branches (arteria pancreatica magna) - short gastric - left gastro-omental
common hepatic: proper hepatic (cystic), right gastric, gastroduodenal (right gastro-omental, superior pancreaticoduodenal)
superior mesenteric: inferior pancreaticoduodenal - intestinal - ileocolic (appendicular) - right colic - middle colic
inferior mesenteric: left colic - sigmoid - superior rectal
Posterior - Visceral: middle suprarenal - renal (inferior suprarenal) - testicular/ovarian - Parietal: inferior phrenic (superior suprarenal) - lumbar - median sacral
Terminal branches: common iliac - marginal - internal iliac | (Gray's s154)
INTERNAL ILIAC: Anterior: umbilical (superior vesical, to ductus deferens) - inferior vesical - middle rectal - uterine (azygos of the vagina) - vaginal - obturator
internal pudendal: (inferior rectal, perineal, artery of the urethral bulb, urethral, deep artery of the penis, dorsal artery of the penis)
inferior gluteal (accompanying of ischiadic nerve, crucial anastomosis)
Posterior: iliolumbar - lateral sacral - superior gluteal | (Gray's s155)
EXTERNAL ILIAC: inferior epigastric (cremasteric) - deep circumflex iliac | (Gray's s156)
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