Hierarquia Anatômica

Anatomia geral > Sistema circulatório > Coração > Atrio esquerdo > Válvula do formae oval

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Descrição

After birth, the septum primum is nothing more than a small flap that covers the foramen ovale on its left side. This flap of tissue is called the valve of the foramen ovale. In some patients, it opens and closes in response to pressure gradients between the left and right atria. When the pressure is greater in the right atrium, the valve opens; when the pressure is greater in the left atrium, the valve closes. 


Text by Antoine Micheau, MD - Copyright IMAIOS

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