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Anterior intercostal branches of internal thoracic artery
From Wikipedia, the free encyclopedia
| Artery: Anterior intercostal branches of internal thoracic artery | |
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| Intercostal spaces, viewed from the left | |
| Latin | rami intercostales; anterior intercostal arteries |
| Gray's | subject #148 584 |
| Source | internal thoracic artery |
| Vein | anterior intercostal veins |
| Dorlands/Elsevier | r_02/12690359 |
The Anterior intercostal branches of internal thoracic artery supply the upper five or six intercostal spaces. The internal thoracic artery then divides into the superior epigastric artery and musculophrenic artery. The latter gives out the remaining anterior intercostal branches.
Two in number in each space, these small vessels pass lateralward, one lying near the lower margin of the rib above, and the other near the upper margin of the rib below, and anastomose with the intercostal arteries from the aorta.
They are at first situated between the pleura and the Intercostales interni, and then between the Intercostales interni and externi.
They supply the intercostal muscles and, by branches which perforate the Intercostales externi, the Pectoral muscles and the mamma.
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| Pulmonary / coronary |
right coronary: SA nodal - AV nodal - atrial - right marginal - posterior interventricular left coronary: anterior interventricular - left circumflex - left marginal |
| Ascending aorta | aortic arch - brachiocephalic (thyreoidea ima) - common carotid |
| Subclavian | internal thoracic: anterior intercostal - thymic - pericardiacophrenic - terminal (musculophrenic, superior epigastric) costocervical trunk: highest intercostal (posterior intercostal 1-2) - deep cervical |
| Descending / thoracic aorta |
visceral: bronchial - esophageal - mediastinal parietal: posterior intercostal 3-11 - subcostal - superior phrenic |