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interatrial
(redirected from interatrial septum primum)

   Also found in: Encyclopedia 0.01 sec.
interatrial /in·ter·atri·al/ (-a´tre-al) situated between the atria of the heart.
interatrial
[in′tər·ā′trē·əl]
Etymology: L, inter, between + atrium, hall
situated between the atria of the heart.

interatrial [in″ter-a´tre-al]
between the atria of the heart.

interatrial
between the atria of the heart.

interatrial foramen
see foramen ovale.
interatrial septal defects
includes patent foramen ovale, persistent foramen primum, persistent foramen secundum.
interatrial septum primum
one of the two membranous sheets which help to partition the two atria during development of the embryo.
interatrial septum secundum
the second of the two membranous sheets which partially separate the two atrial chambers in the developing embryo.


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