ZFIN Phenotype Statement: Mauthner neuron increased amount, abnormal

Phenotype:	Mauthner neuron increased amount, abnormal
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:	Mauthner neuron
Synonyms:
Definition:	Is a hindbrain interneuron. Giant reticulospinal neurons possessing thick crossed axons and positioned dorsally in the hindbrain tegmentum at the level of entrance of the eighth cranial nerve. The Mauthner neuron is paired. The M-cell has two large invariant dendrites: The lateral dendrite terminates in the sensory neuropil of the acoustico-lateral area, and the ventral dendrite terminates in the neuropil of the motor tegmentum. Fine dendrites are present, and mostly arise from three regions; from the terminus of each major dendrite and from the ventral surface of the perikaryon.
Ontology:	Anatomy Ontology [ZFA:0009149]

Name:	increased amount
Synonyms:	accessory, increased, increased number, present in greater numbers in organism, supernumerary
Definition:	An amount which is relatively high.
Ontology:	Phenotypic Quality Ontology [PATO:0000470]