| Name: | horizontal myoseptum |
|---|---|
| Synonyms: | horizontal septum |
| Definition: | A connective tissue partition developing at the apex of the chevron-shaped myotome and separating dorsal (epaxial) and ventral (hypaxial) body wall muscle masses. |
| Ontology: | Anatomy Ontology [ZFA:0000671] |
| Name: | lacks parts or has fewer parts of type |
|---|---|
| Synonyms: | loss of |
| Definition: | The bearer of this quality has_part < n of the indicated entity type, where n is the normal amount for a comparable organism. Note that the bearer of the quality is the whole, not the part. Formally: If a bearer entity e has fewer parts of type X at time t, then the number of instances x of X at t such that x part_of e is < n, where n is either the normal number for comparable entities, or n is stated explicitly. This case includes the limit case, where the bearer lacks all parts of the specified type. |
| Ontology: | Phenotypic Quality Ontology [PATO:0001999] |
| Name: | motor neuron |
|---|---|
| Synonyms: | motoneuron |
| Definition: | An efferent neuron that passes from the central nervous system or a ganglion toward or to a muscle and conducts an impulse that causes movement. |
| Ontology: | Anatomy Ontology [ZFA:0009052] |