| Name: | tunica interna swim bladder |
|---|---|
| Synonyms: | |
| Definition: | Multi-tissue structure that is the internal layer of the swim bladder and is comprised of thin endoderm and a smooth muscle layer called the muscularis mucosa with longitudinal and circular fibres with some collagen. |
| Ontology: | Anatomy Ontology [ZFA:0001701] |
| Name: | smooth muscle |
|---|---|
| Synonyms: | |
| Definition: | A non-striated muscle that is composed of spindle-shaped cells. Smooth muscle usually is organized into sheets that line cavitated organs. |
| Ontology: | Anatomy Ontology [ZFA:0005274] |
| Name: | absent |
|---|---|
| Synonyms: | absence, absent from organism |
| Definition: | A quality denoting the lack of an entity. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000462] |