What is the name given for normal situs?

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Solitus is the term used for normal situs. It denotes the standard arrangement of thoracic and abdominal organs and the cardiac chambers: the heart sits with the morphologic right atrium on the right and the morphologic left atrium on the left, the stomach and spleen on the left, and the liver on the right. This normal pattern helps ensure the relationships of the atria, viscera, and great vessels are as expected. Inversions of this pattern describe inversus (mirror-image arrangement), while heterotaxy or ambiguous situs refers to patterns that are not clearly normal or inverted. Thus, the normal name for this arrangement is solitus.