| Name: | dermis |
|---|---|
| Synonyms: | |
| Definition: | A collagenous layer of the skin subjacent to the epidermis and covering the hypodermis. It contains various types of cells (e.g. fibroblasts, pigment cells, nerve, blood vessels and scales. |
| Ontology: | Anatomy Ontology [ZFA:0001119] |
| Name: | ionocyte |
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| Synonyms: | |
| Definition: | Specialized epithelial cells involved in the maintenance of osmotic homeostasis. They are characterized by abundant mitochondria and ion transporters. In amniotes, they are present in the renal system. In freshwater fish, ionocytes in the skin and gills help maintain osmotic homeostasis by absorbing salt from the external environment. |
| Ontology: | Anatomy Ontology [ZFA:0005323] |