| Name: | central nervous system | 
|---|---|
| Synonyms: | cns | 
| Definition: | The brain and spinal cord. | 
| Ontology: | Anatomy Ontology [ZFA:0000012] | 
| Name: | epithelium | 
|---|---|
| Synonyms: | |
| Definition: | Portion of tissue, that consists of one or more layers of epithelial cells connected to each other by cell junctions and which is underlain by a basal lamina. | 
| Ontology: | Anatomy Ontology [ZFA:0001486] |