| Phenotype: | cranial nerve IX axon arborization decreased occurrence, 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: | cranial nerve IX |
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| Synonyms: | CN-IX, glossopharyngeal nerve, nervus glossopharyngeus |
| Definition: | Cranial nerve that innervates gill muscles. Sometimes called a branchiomeric nerve because it innervates derivatives of the branchial arches. The root is typically found at rhombomere 6. This nerve contains sensory axons that carry both somatic and visceral sensory information as well as motor axons from branchiomotor neurons. |
| Ontology: | Anatomy Ontology [ZFA:0000668] |
| Name: | axon arborization |
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| Synonyms: | |
| Definition: | The process in which the terminal anatomical structures of an axon are generated and organized into branches of specialised projections, or boutons. An axon is the long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminal branches. |
| Ontology: | GO: Biological Process [GO:0140060] QuickGO AmiGO |
| Name: | decreased occurrence |
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| Synonyms: | decreased incidence |
| Definition: | An occurrence which is relatively low. |
| Ontology: | Phenotypic Quality Ontology [PATO:0002052] |