Morphological study of human heart and placenta in the first trimester of prenatal period of ontogenesis

Abstract

Probability of abnormal development is high in certain periods when the increased sensitiveness of embryo and fetus takes place. Influence of damaging factors as maternal infection and, consequently, fetal infection is a reason of abnormal development. Morphological characteristics of heart and placenta were studied during the first trimester of prenatal period of ontogenesis. 17 embryos, fetuses and placenta of 4-12 weeks were used. Abortions were made according to medical statements or maternal willing. The abnormal development of primary leaflets of atrioventricular valves, retardation of fetus growth, abnormal position of organs including ectopic heart, and abnormal limbs development were observed.

Keywords

• cardiogenesis
• embryogenesis
• placenta
• myocardium
• cardiogelly
• pregnancy
• fetus grow retardation
• placental blood vessels