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Preferred Label : sternum;

Uberon definition : A midventral endochondral skeletal element which represents the origin site of the pectoral muscles[PHENOSCAPE:ad].;

Uberon synonym : vertebrate sternum;

Uberon related term : breastbone;

Uberon Development note : While its developmental origins are similar to the ribs (from the myospetum and septum of the trunk region), it is often associated with the pectoral skeleton, due to both function and physical connections (i.e. the coracoid of archosaurs). It may be a single element or a series of smaller structure (sternebrae). Based on Kardong 2012. [PHENOSCAPE:ad].;

Uberon Homology note : Fishes lack a sternum. (...) A sternum is absent in the first fossil tetrapods, but it is present in modern amphibians. (...) Thus, a sternum occurs in some modern amphibians, birds, mammals and archosaurs. However, its absence in the common ancestors to these groups means that it has arisen independently several times within the field of the midventral connective tissue.[well established][VHOG];

Uberon Taxon note : in birds, either ratite (no keel or carina) or carinate (keel and carina present);

Détails


Position du mot-clé dans l'(les) arborescence(s) : arborescence

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A midventral endochondral skeletal element which represents the origin site of the pectoral muscles[PHENOSCAPE:ad].

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27/07/2025


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