"Gross Anatomy"
Expected headings
"Gross Anatomy"
"Branches"
"Supply"
"There are 11 paired arteries that constitute the posterior intercostal arteries. The first two intercostal spaces are supplied by the superior intercostal artery, and the remaining nine are supplied by separate branches from the descending thoracic aorta 1. The right sided arteries are longer as the aorta lies to the left of the midline. They pass in front of the vertebrae and behind the azygos venous system, oesophagus and thoracic duct. The left sided arteries run posteriorly adjacent to the vertebrae and enter into the intercostal space."
"There are 11 paired arteries that constitute the posterior intercostal arteries. The first two intercostal spaces are supplied by the superior intercostal artery, and the remaining nine are supplied by separate branches from the descending thoracic aorta 1. The right sided arteries are longer as the aorta lies to the left of the midline. They pass in front of the vertebrae and behind the azygos venous system, oesophagus and thoracic duct. The left sided arteries run posteriorly adjacent to the vertebrae and enter into the intercostal space."
"The anterior ramus runs along the costal groove, accompanied by an intercostal nerve and vein. The vein lies superior to the artery and the nerve inferior to it (mnemonic "VAN"). The intercostal artery, vein and nerve courses deep to the internal and superficial to the innermost intercostal muscles. The anterior ramus divides into four branches 1:"