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Aortic Arches - Anatomy & Physiology (view source)
Revision as of 14:08, 7 August 2009
, 14:08, 7 August 2009no edit summary
* The right fourth aortic arch forms the proximal segment of the right subclavian artery
* The right fourth aortic arch forms the proximal segment of the right subclavian artery
* The fifth aortic arches are never present in the mammal
* The fifth aortic arches are never present in the mammal
* The proxiaml segment of the right sixth aortic arch forms part of the right pulmonary artery while the distal segment atrophies.
* The proximal segment of the right sixth aortic arch forms part of the right pulmonary artery while the distal segment atrophies.
* The proxiaml segment of the left sixth arch forms part of the pulmonary artery while the distal segment forms the Ductus arteriosus.
* The proximal segment of the left sixth arch forms part of the pulmonary artery while the distal segment forms the Ductus arteriosus.
These changes occur in the thrid and fourth weeks of gestation, at which point the foetal circulation begins to resemble that of the adult.
These changes occur in the thrid and fourth weeks of gestation, at which point the foetal circulation begins to resemble that of the adult.