teeth?

[zriceman]

Shaum says "Teeth are modified epidermal and mesodermal structures...."

But in destroyer, it says teeth arose from ectoderm only.

any inputs?

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[lphiewok]

i think it's safer to go with ectoderm for teeth.
i am not sure if one of them is right or wrong, since most question is going to ask you which comes from which (instead of which comes from 2 of these), and usually integuments (such as nails and etc.) are always associated with ectoderm, it's prob safer to pick ectoderm in that case.

 

[pistolpete007]

i think everything is ectoderm with teeth except dental which is mesoderm

 

[Streetwolf]

Teeth arise from ectoderm and ectomesenchyme (think neural crest cells).

 

[klutzy1987]

cliffs says that teeth come from the ectoderm. If cliffs and destroyer are in agreement i think its safe to go with that.

 

[War Eagle]

Tooth enamel comes from ectoderm, but dentin comes from mesoderm.