| Phenotype: | secondary motor neuron axon zn-8 labeling decreased distribution, abnormal |
|---|---|
| Note: | This phenotype statement describes a gene expression or antibody labeling pattern. Anatomy terms are combined with a gene or antibody and phenotype quality. |
EXPRESSION ANATOMY:
| Name: | secondary motor neuron |
|---|---|
| Synonyms: | secondary motoneuron |
| Definition: | Motor neurons that develop several hours later than primary motoneurons and sprout axons several hours after the primary motor growth cones have extended to the periphery. They have smaller cell bodies and are located more ventrally and laterally in the spinal cord than primary motoneurons. Axons usually project directly out of the spinal cord with no apparent contact with the Mauthner axon and are positioned lateral to the Mauthner axon in their path to the ventral root. Secondary motoneurons have smaller fields, which can overlap one another, and innervate many fewer muscle fibers than primary motoneurons. |
| Ontology: | Anatomy Ontology [ZFA:0009247] |
ANTIBODY LABELING:
EXPRESSION QUALITY:
| Name: | decreased distribution |
|---|---|
| Synonyms: | low distribution |
| Definition: | A distribution which is relatively low. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001672] |