lips of blastopore

См. также в других словарях:

• digestive system, human — Introduction  the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …   Universalium

• concrescence — 1. SYN: coalescence. 2. In dentistry, the union of the roots of two adjacent teeth by cementum. [see concrement] * * * con·cres·cence kən kres ən(t)s, kän n a growing together: COALESCENCE …   Medical dictionary

• epiboly, epibole — 1. A process involved in gastrulation of telolecithal eggs in which, as a result of differential growth, some of the cells of the protoderm move over the surface toward the lips of the blastopore. 2. Growth of epithelium in an …   Medical dictionary

• mesoderm — The middle of the three primary germ layers of the embryo (the others being ectoderm and endoderm); m. is the origin of connective tissues, myoblasts, blood, the cardiovascular and lymphatic systems, most of the urogenital system, and the …   Medical dictionary

• germ ring — the proliferating marginal zone of the early blastoderm that is about to become the lips of the blastopore …   Medical dictionary

• concrescence — [kən kres′əns] n. [L concrescentia < concrescere, to grow together < com , together + crescere, to grow: see CRESCENT] Biol. a growing together of parts or cells, as of the lips of the blastopore of the embryo during gastrulation …   English World dictionary