Fossa ovalis (heart)

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Fossa ovalis (heart)
File:Gray493.png
Interior of right side of heart.
Latin fossa ovalis cordis
Gray's subject #138 531
Precursor foramen ovale

Found in the right atrium of the heart, the fossa ovalis is an embryonic remnant of the foramen ovale, which normally closes shortly after birth.

In a heart specimen of a neonate, the fossa ovalis is translucent, but later in life the membrane thickens. [1]

Clinical significance

Failure of the foramen ovale to close results in a disorder known as patent foramen ovale.

References

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Additional images

External links

- "Right atrium, internal structure, anterior view"
bs:Fossa ovalis
  1. Timothy F Feltes; Allen, Hugh D.; Moss, Arthur J.; Adams, Forrest H.; David J Driscoll; Shaddy, Robert Alan (2008). Moss and Adams' Heart disease in infants, children, and adolescents: including the fetus and young adult. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. p. 10. ISBN 0-7817-8684-3.