Review questions week 4
The form of proliferation that happens due to tissue enlargement by addition of layers to the outside of the structure.
Appositional growth
tooth abnormality due to disturbances in the cap stage that results in the look of two teeth in one but has ONE PULP CHAMBER
Dens in Dente
Condensed mass of ectomesenchyme within the concavity of the enamel organ that is the future dentin and pulp.
Dental papilla
The outer cells of the dental papilla will eventually turn into:
Dentin
Induction is the initial physiological stage within the embryonic period and only happens in this stage of development.
False
Medical providers know of all teratogens and therefore, none are prescribed to pregnant women.
False
Physiological stage where one group of cells acts on another. Cause and effect
Induction
Placenta develops due to:
Interaction of Trophoblasts and Endometrial tissue
Development of specific tissue structure or differing form due to migrating cells and activity.
Morphogenesis
Name of cells that migrate and differentiate into structures of the head and neck.
Neural crest cells
Treacher collins syndrome is a birth defect that happens due to the failure of what type of cells to migrate.
Neural crest cells
What is responsible for out bilateral symmetry
Primitive streak
The earliest indication of the tissue type or organ during the prenatal development.
Primordium
Primary physiological stage involved in the Bud Stage of tooth development
Proliferation
Which of the following could be considered teratogenic
environmental agents infection drugs, controlled and non-controlled substances
The foregut represents the mature pharynx and digestive tract
false
Which is the name for the Embryonic event that is described by the fertilized ovum implanting itself into the uterus wall.
implantation
what layer of the trilaminar disc leads to connective tissue ( dermis, bone, cartilage, blood)
mesoderm
missing teeth is due to a lack of initiation and a lack of formation of the dental lamina
true
Provides nourishment for the embryonic disc until the placenta is working efficiently.
yolk sac
