| Name: | locus coeruleus | 
|---|---|
| Synonyms: | loci coeruleus | 
| Definition: | The locus coeruleus is a widely projecting isthmal noradrenergic nucleus. It consists of between three and ten neurons, most of which have multiple, bilaterally projecting axons. | 
| Ontology: | Anatomy Ontology [ZFA:0000539] | 
| Name: | neuron | 
|---|---|
| Synonyms: | |
| Definition: | The basic cellular unit of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the nervous system. | 
| Ontology: | Anatomy Ontology [ZFA:0009248] |