| Phenotype: | horizontal myoseptum lacks parts or has fewer parts of type RoP motor neuron axon, abnormal |
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| Note: | This statement combines anatomy and/or ontology terms with phenotype quality terms to create a complete phenotype (EQ) statement. For detailed information on individual terms, click the hyperlinked term name. |
| Name: | horizontal myoseptum |
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| 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: | RoP motor neuron |
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| Synonyms: | rostral primary motoneuron |
| Definition: | A primary motoneuron that is part of the spinal cord. The axon of the CaP motoneuron on emerging from the ventral root. At the horizontal septum, however, the RoP axon turns laterally to extend within the horizontal septum to the lateral surface of the muscle. |
| Ontology: | Anatomy Ontology [ZFA:0005180] |