interatrial foramen primum

ostium primum.

Medical dictionary. 2011.

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  • Primary interatrial foramen — Interior of dorsal half of heart from a human embryo of about thirty days. (Ostium primum visible below septum primum, but not labeled.) Latin …   Wikipedia

  • Foramen secundum — Latin foramen secundum Days 33 Code TE E5.11.1.5.2.1.2 The ostium secundum (or foramen secundum) is a foramen in the septum primum. It should not be confused with the foramen ovale, which is a foramen in the septum secundum …   Wikipedia

  • Foramen — A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation through a bone or a membranous structure. SYN: trema (1). [L. an… …   Medical dictionary

  • Foramen ovale (heart) — Not to be confused with ostium secundum. Foramen ovale (heart) Sketch showing foramen ovale in a fetal heart. Red arrow shows blood from the inferior caval vein. HF: right atrium, VF: left atrium. HH og VH: right and left ventricle. The heart… …   Wikipedia

  • Interatrial septum — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 138 GrayPage = 530 Caption = Interior of right side of heart. (labeled at right, as atrial septum ) Caption2 = Interior of dorsal half of heart of human embryo of about thirty five days.… …   Wikipedia

  • 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 — 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 * * * an… …   Medical dictionary

  • ostium — A small opening, especially one of entrance into a hollow organ or canal. SEE ALSO: orifice, opening, os, mouth (2). [L. door, entrance, mouth] o. abdominale tubae uterinae [TA] SYN: abdominal o. of uterine tube …   Medical dictionary

  • Circulatory system — This article is about the organ system. For the band, see Circulatory System. For transport in plants, see Vascular tissue. Circulatory system …   Wikipedia

  • ostium secundum — ostium se·cun·dum sə kən dəm n an opening in the upper part of the developing embryonic interatrial septum corresponding to the foramen ovale of the fetus * * * an opening high in the septum primum of the embryonic heart, approximately where the… …   Medical dictionary

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