Preferred Label : trigeminal placode complex;
Uberon definition : A neurogenic placode that arises at the level of the midbrain-hindbrain boundary and
develops into a trigeminal ganglion.;
Uberon synonym : trigeminal placode; trigeminal V placode;
Uberon related term : profundus V placode; trigeminal placodes; profundus placode;
Uberon Homology note : The dorsolateral placodes (trigeminal and vestibular) develop from ectoderm lateral
to the brain (...). In summary, the collective term 'placodes' refers to some rather
different structures, probably with different evolutionary origins. Some sensory placodes
(at least the otic and olfactory) may have homologues in basal chordates. Even if
this is so, it is apparent that they were elaborated considerably during early vertebrate
evolution. Epibranchial and dorsolateral placodes appear to be new; we infer that
their origin depended on the evolution of specific inductive signals.[well established][VHOG];
Uberon Terminology note : Consider naming this 'trigeminal placode complex'. Also, Fig9-5 of ISBN:0471888893
calls this the profundus placode; XAO says 'profundal and the trigeminal ganglia are
separate distally but fused at their proximal end...';
Origin ID : 0003070;
develops into
- has part
- has potential to developmentally contribute to
A neurogenic placode that arises at the level of the midbrain-hindbrain boundary and
develops into a trigeminal ganglion.
