ESTRING (estradiol vaginal ring) PLACEMENT. The exact position of ESTRING (estradiol vaginal ring) is not critical, as long as it is placed in the upper third of the vagina. When ESTRING (estradiol vaginal ring) is in place, you should not feel anything.he soft, flexible ring is placed in the upper third of the vagina (by the physician or the patient). ESTRING (estradiol vaginal ring) should be removed after90 days of continuous use. If continuation of therapy is indicated, the flexible ring should be replaced.
Fertilization takes place in the fallopian tube, more specifically the juncture of the ampulla and isthmus (ampullary-isthmic junction). The ovaries will ovulate and expel a mature ovum due to a surge in the Leutenizing Hormone.
1 In humans fertilization occurs in the end of the fallopian tube away from the uterus (close to the ovary). 2  The egg and the associated cumulus cells are ovulated (released) from an ovarian follicle and picked up by the fallopian tube.3  The tube pulls it inside where the sperm can find it. In humans fertilization occurs in the end of the fallopian tube away from the uterus (close to the ovary). 2  The egg and the associated cumulus cells are ovulated (released) from an ovarian follicle and picked up by the fallopian tube. 3  The tube pulls it inside where the sperm can find it.