pulmonary arch

noun

Medical Definition of pulmonary arch

: either the right or the left sixth aortic arch that in the human fetus persists on the right side as the right pulmonary artery and on the left side as the ductus arteriosus and part of the pulmonary trunk

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“Pulmonary arch.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/pulmonary%20arch. Accessed 6 December 2019.

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