Definition of Placode. Meaning of Placode. Synonyms of Placode

Here you will find one or more explanations in English for the word Placode. Also in the bottom left of the page several parts of wikipedia pages related to the word Placode and, of course, Placode synonyms and on the right images related to the word Placode.

Definition of Placode

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Placoderm
Placoderm Plac"o*derm, n. [Gr. ?, ?, tablet + ? skin.] (Paleon.) One of the Placodermi.
Placodermal
Placodermal Plac`o*der"mal, a. (Paleon.) Of or pertaining to the placoderms; like the placoderms.
Placodermata
Placodermata Plac`o*der"ma*ta, n. pl. [NL.] (Paleon.) Same as Placodermi.
Placodermi
Placodermi Plac`o*der"mi, n. pl. [NL., fr. Gr. ?, ?, a tablet + ? skin.] (Paleon.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus.

Meaning of Placode from wikipedia

- 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...
- In embryology, the nasal placode (or olfactory placode) gives rise to the olfactory epithelium of the nose. Two nasal placodes arise as thickened ectoderm...
- specification. The olfactory placode forms as two thickenings of non-neural region of embryonic ectoderm. In mice, the olfactory placode derives from an anterior...
- The lens placode is a thickened portion of ectoderm that serves as the precursor to the lens. In****tion is the process of folding in cells. The lens...
- In embryology, the otic placode is a thickening of the ectoderm on the outer surface of a developing embryo from which the ear develops. The ear, including...
- of the inner ear. During the earlier stages of embryogenesis, the otic placode in****tes to produce the otic cup. Thereafter, the otic cup closes off...
- addition to it. Accessory proboscis arise from a supernumerary olfactory placode. A disruptive proboscis occurs if an hamartoneoplastic lesion (benign growths...
- placode (embryonic nasal tissue). More recently, it was discovered that a subset of GnRH neurons can trace their origins not from the nasal placode,...
- point. This thickened portion of the ectoderm is called the lens placode. Next, the placode in****tes and forms a pouch referred to as the lens pit. Scientists...
- auditory placode, a thickening of the ectoderm which gives rise to the bipolar neurons of the cochlear and vestibular ganglions. As the auditory placode in****tes...