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Dental Embryology Terminology
|"programmed cell death" -fragmentation of a cell into membrane bound particles. -Elimination by phagocytosis by specialized cells. -Accompanies embryonic growth and differentiation.
|Tissues from Endoderm
|"inner layer" -Epithelial lining the inside of the digestive tube except part of the mouth and pharynx. -Lining cells of all the glands which open into digestive tract including liver and pancreas.
|Tissues from Ectoderm
|"Outer layer" -Forms CNS, lens of eye, sensory of epithelium, epidermis, nails, and hair, nasal cavity, and tooth enamel.
|Tissues from Mesoderm
|"middle layer" -Forms the cardiac, skeletal, smooth muscle, bone, cartilage, lymph cells, blood, dentin, pulp, cementum, and periodontal ligament.
|Early stage in the development of triploblastic organisms in animals and humans. -Cells flow in over the primitive streak between the two already existing germinal layers to form the next germinal layer.