| Name: | notochord |
|---|---|
| Synonyms: | notocord |
| Definition: | Rod-like principal supportive element of the embryo and larva, present in the midline just ventral to the neural tube, and differentiating during the segmentation period to form large vacuolated epithelial cells and a surrounding sheath of fibrous and elastic layers. Layering of the sheath may differ in structure, thickness and development among groups; in cypriniforms there are actually three very thin layers to the sheath. A functional, well developed notochord is present throughout life in certain basal fish groups but not in cypriniforms. |
| Ontology: | Anatomy Ontology [ZFA:0000135] |
| Name: | vacuole |
|---|---|
| Synonyms: | vacuolar carboxypeptidase Y |
| Definition: | A closed structure, found only in eukaryotic cells, that is completely surrounded by unit membrane and contains liquid material. Cells contain one or several vacuoles, that may have different functions from each other. Vacuoles have a diverse array of functions. They can act as a storage organelle for nutrients or waste products, as a degradative compartment, as a cost-effective way of increasing cell size, and as a homeostatic regulator controlling both turgor pressure and pH of the cytosol. |
| Ontology: | GO: Cellular Component [GO:0005773] QuickGO AmiGO |
| Name: | disorganized |
|---|---|
| Synonyms: | |
| Definition: | A structural quality inhering in a bearer by virtue of the bearer's lacking organisation. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000937] |