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Anatomy Emby Hist

Chapter 3-5

TermDefinition
Cleavage Process during prenatal development when mitosis converts a zygote to a blastocyte.
Differentiation Change in embryonic cells to become quite distinct structurally and functionally.
Ectoderm Layer in trilaminar embryonic disc derived from epiblast layer and lining stomodeum.
Ectodermal Dysplasia Syndrome involving abnormal development of one or more ectodermal structures including anodontia.
Endoderm Layer trilaminar embryonic disc derived from hypoblast layer.
Foregut Anterior part of future digestive tract or primitive pharynx that forms oropharynx
Fusion joining of embryonic tissue of two separate surfaces or elimination of a furrow between two adjacent swellings or developmental disturbance in which adjacent tooth germs unite to form a large tooth.
Karyotype photographic analysis of chromosomes
Mesenchyme embryonic connective tissue
Morphdifferentiation development of the differing form that will create a specific structure
Morphogenesis Process of development of specific tissue morphology
Morphology form of a structure
Neural Crest Cells group of cells that develop from neuroectoderm that migrate from the crests of the neural folds and disperse to specific sites within the mesencyme
Neural Folds Raised ridges in the neural plate that surround deepening neural groove
Neural Groove Groove from further growth and thickening of neural plate
Neural Plate Centralized band of cells that extends the length of embryo
Neural Tube Tube formed when neural folds meet and fuse superior to neural groove
Neuroectoderm Specialized group of cells that differentiates from ectoderm
Primitive Streak Furrowed rod-shaped thickening in middle of embryonic disc.
Teratogens environmental agents or actors such as infections, drugs, radiation causing malformations
Brachial arch six stacked swellings of tissue that appear inferior to the stomodeum, including the mandibular arch
First brachial arch Mandibular arch in embryo
Second Brachial brachial arch inferior to mandibular arch in embryo or hyoid bone
Third brachial arch Brachial arch in embryo responsible for formation of laryngeal catilages
Fifth brachial arch rudimentary embryonic brachial arch that is absent or included with the fourth arch
Fourth brachial arch brachial arch in embryo that participates in formation of laryngeal cartilages
Sixth brachial arch brachial arch in embryo that fuses with fourth brachial arch to participate in formation of laryngeal cartilages
Cleft lip development disturbance of upper lip
Created by: daisenmurray