Question

What is the primary function of the syncytiotrophoblast?

Options

• To form the inner cell mass

• To develop into the amnion

• To produce cells for growth of trophoblast

• To invade endometrium and secrete hCG

Answer 1

The syncytiotrophoblast is the outer multinucleate layer of the differentiated trophoblast. Its primary functions are to invade the endometrial tissue and to secrete human chorionic gonadotropin (hCG), which is essential for maintaining the corpus luteum and pregnancy.