ostium primum

ostium pri·mum -'prī-məm n an opening between the two embryonic atria of the heart that exists temporarily at the bottom of the developing interatrial septum and is eventually closed off by this septum and replaced by the ostium secundum

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an opening in the lowest aspect of the septum primum of the embryonic heart, posteriorly near the primordial atrioventricular valves. Called also interatrial foramen primum.

Medical dictionary. 2011.

Look at other dictionaries:

  • ostium primum — См. ostium secundum. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • Ostium primum — Infobox Embryology Name = Ostium primum Latin = GraySubject = 135 GrayPage = 512 Caption = Interior of dorsal half of heart from a human embryo of about thirty days. (Ostium primum visible below septum primum, but not labeled.) Caption2 = System …   Wikipedia

  • Ostium primum — Septum primum Le septum primum est une cloison qui se développe pendant l embryogénèse du cœur entre les deux futurs oreillettes, où il reste un trou physiologique nommé ostium primum. Il se développe une autre cloison à la gauche du septum… …   Wikipédia en Français

  • Ostium primum atrial septal defect — Classification and external resources Schemating drawing showing the location of different types of ASD, the view is into an opened right atrium. HV: right ventricle; VCS: superior caval vein; VCI: inferior caval vein; 1: upper sinus venosus… …   Wikipedia

  • Ostium-Primum-Defekt — Dieser Artikel oder Abschnitt bedarf einer Überarbeitung. Näheres ist auf der Diskussionsseite angegeben. Hilf mit, ihn zu verbessern, und entferne anschließend diese Markierung …   Deutsch Wikipedia

  • ostium primum defect — see atrial septal d s …   Medical dictionary

  • ostium primum persistent — an endocardial cushion defect characterized by a cleft in the basal portion of the atrial septum, usually associated with cleft mitral valve …   Medical dictionary

  • Ostium — es el nombre genérico que en medicina se da a los orificios corporales, especialmente a los orificios de las trompas uterinas y auditiva. Ostium arteriosum: nombre con el que se conocen los orificios aórtico y pulmonar del corazón. Ostium… …   Wikipedia Español

  • Ostium — (plural ostia) may refer to: Anatomy Ostium of Fallopian tube Ostium primum or foramen ovale (ostium secundum) of the developing heart Ostium maxillare of the maxillary sinus Ostium of female lepidoptera genitalia This disambiguation page lists… …   Wikipedia

  • primum — see OSTIUM PRIMUM …   Medical dictionary

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