Bicuspid (or mitral) valve

It joins the left atrium to the left ventricle .

It has the same general structure of the triscuspid valve, but unlike the latter it has only two cusps:

- anterior or aortic cusp

- posterior cusp (or small cusp) → is quadrangular and smaller than the anterior cusp.

Furthermore:

- each flap has an axial and parietal face

- papillary muscles are inserted on the free margin.

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