| Neurogenic placode | |
|---|---|
| Details | |
| Precursor | Ectoderm |
| Gives rise to | Cranial ganglia, peripheral nervous system |
| Identifiers | |
| Latin | placode neurogenica |
| Anatomical terminology | |
In embryology, a neurogenic placode is an area of thickening of the epithelium in the embryonic head ectoderm layer that gives rise to neurons and other structures of the sensory nervous system.[1]
Placodes are embryonic structures that give rise to structures such as hair follicles, feathers and teeth. The term "neurogenic placode" generally refers to cranial placodes that have neurogenic potential - i.e. those that give rise to neurons associated with the special senses and cranial ganglia. Cranial placodes include a diverse range of structures found across chordates, but the neurogenic placodes found in vertebrates arose later in evolution.[1]