Its objectives include stimulating the development and improvement of teaching and research of morphological sciences on the American continent, facilitating scientific exchange in all its aspects.
The designation of the host country is resolved at the general assembly by a vote of its partners and it is usually held every 3 years.
The following countries have hosted at least one congress: Argentina, Brazil, Canada, Costa Rica, Chile, Mexico, Peru, Uruguay, USA and Venezuela.
Educational institutions of medical and other health areas which spoke Spanish and Portuguese used it on a daily basis.
Up today, there have been sixteen symposia: four in Costa Rica, two in Brazil, three in Mexico, four in Chile, two in Peru and one in Nicaragua.
The PAA has the support of various magazines, which are the official organ of publication, showing summaries of scientific congresses communications and other aspects.