"North America" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
The northern continent of the Western Hemisphere, extending northward from the Colombia-Panama border and including CENTRAL AMERICA, MEXICO, Caribbean area, the UNITED STATES, CANADA and GREENLAND. The term often refers more narrowly to MEXICO, continental UNITED STATES, AND CANADA.
Below are MeSH descriptors whose meaning is more general than "North America".
Below are MeSH descriptors whose meaning is more specific than "North America".
This graph shows the total number of publications written about "North America" by people in this website by year, and whether "North America" was a major or minor topic of these publications.
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