"Cloaca" 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.
MeSH information
A dilated cavity extended caudally from the hindgut. In adult birds, reptiles, amphibians, and many fishes but few mammals, cloaca is a common chamber into which the digestive, urinary and reproductive tracts discharge their contents. In most mammals, cloaca gives rise to LARGE INTESTINE; URINARY BLADDER; and GENITALIA.

This graph shows the total number of publications written about "Cloaca" by people in this website by year, and whether "Cloaca" was a major or minor topic of these publications.
Bar chart showing 421 publications over 30 distinct years, with a maximum of 42 publications in 2011
To see the data from this visualization as text, click here.