One of the pair of mesenchymal swellings (folds) located on either side of the cloacal membrane during the indifferent stage of embryonic development; cranial to the cloacal membrane the folds unite to form the genital tubercle; caudally the folds are subdivided into urogenital folds anteriorly and anal folds posteriorly [ MP:anna MP:0011836 ]
术语信息
- EHDAA2:0004009
We presume this is distinct from AAO:0001003, an external integumentary structure - check with amphibian anatomy ontology developers. AO notes: the text def states mesenchymal swelling, EHDAA2 splits into mesenchymal and epithelial parts
One of the pair of mesenchymal swellings (folds) located on either side of the cloacal membrane during the indifferent stage of embryonic development; cranial to the cloacal membrane the folds unite to form the genital tubercle; caudally the folds are subdivided into urogenital folds anteriorly and anal folds posteriorly
术语关系
- multi-tissue structure
- part of some embryo
- part of some external anal region
- adjacent to some cloacal membrane