STAGES OF THE EMBRYO DEVELOPMENT OF THE PAROTEAR SALIVAL GLAND IN THE WHITE RAT

Abstract

The study of the embryogenesis of any organ is extremely important for understanding its structure and functioning, the features of pathological processes, the occurrence of variants and defects. To date, significant material has been collected on such malformations of the parotid salivary gland as aplasia, dystopia and various heterotopia. It is known that in the course of embryogenesis there are some critical periods when the developing organism is most susceptible to the influence of harmful factors, and many authors believe that such critical periods are the states of transition from one stage of development to another, when the former regulatory mechanisms have exhausted themselves, and new ones have not yet reached the required level of development. Given this circumstance, it is expedient to identify stages of development in the course of studying embryogenesis.