The oropharynx extends inferiorward from the soft palate to the superior border of the epiglottis. It communicates anteriorly with the oral cavity by the faucial (oropharyngeal) isthmus, which is bounded superiorly by the soft palate, laterally by the palatoglossal arches, and inferiorly by the tongue (see fig. 53-1).he word throat is used for the parts of the neck anterior to the vertebral column, especially the pharynx and the larynx. The pharynx is the part of the digestive system situated posterior to the nasal and oral cavities and posterior to the larynx.
Freebase(0.00 / 0 votes)Rate this definition: Polygenesis. In the field of linguistics, polygenesis is the view that human languages evolved as several lineages independent of one another. It is contrasted with monogenesis, which is the view that human languages all go back to a single common ancestor.
Polygenic inheritance. Polygenic inheritance is a characteristic that is controlled by more than one gene (poly means many). An organismâs final appearance (phenotype) is a result of the interaction between the information held in its genotype and the effect of the environment acting on it during growth and development.