Secretory endometrium dating

Studies show that after 7 weeks, the placenta takes over this function.

If pregnancy does not occur, menses begins with the demise of the corpus luteum.

It examines the female pelvic organs including the uterus (commonly called the “womb”), the endometrium (the lining of the uterus), the cervix and the ovaries.

Transvaginal ultrasound usually produces better and clearer images of the female pelvic organs, because the ultrasound probe lies closer to these structures.Presumably, progesterone prepares the endometrium for implantation and maintenance of a pregnancy.If pregnancy occurs, the production of progesterone from the corpus luteum continues for 7 weeks because of the tonic release of luteinizing hormone (LH) from the pituitary gland.Zagazig University Hospitals, Egypt Correspondence and reprint requests: Dr. El Nashar, Althawra St., Mansoura, Fax: 0502331911, email: elnashar53@Received on May 19, 2003; revised and accepted on September 10, 2003 Code Number: mf04003 ABSTRACT Embryo implantation depends on the quality of the ovum and endometrial receptivity.Endometrial receptivity is a temporally unique sequence of factors that make the endometrium receptive to embryonic implantation.