Embryology Exam 1

The study of embryogenesis

Change in embryonic cells to form the specialized cells with structures and functions

Specialized group of cells that migrate throughout the embryo and differentiate into many different cell types; first located in the regions of the neural plate, then atop the neural folds, then they remain outside the neural tube when it forms

Ages when first primary teeth erupt

Ages when first permanent teeth erupt

Mesenchyme derived specifically from ectodermal cells, forms the teeth

Neural crest tissue responsible for formation of the face (one of the function domains of the neural crest)

Cells that secrete dentin

Cells that secrete enamel

Two developing adjacent teeth join to form a single large crown

After the roots develop, cementum is deposited between the roots of adjacent teeth and joins the roots together; crown remain separate

Small islands of enamel located on the root surface close to the CEJ caused by the displacement of ameloblasts to the root surface

Composed of epithelial cells from HERS after HERS disintegrates and then become located in the mature PDL that may cause perio cysts

Major signaling center for tooth development

Number of primary tooth buds per arch