the internal OS
It is the cervix.
Cervix
Cervix
cervix
The neck of the uterus, which has a small opening and extends into the inner end of the vagina. The cervix is part of the uterus. The uterus looks like a bottle and the cervix is the neck. The cervix fits slightly into the vagina. Sperm have to travel through an opening in the cervix, into the uterus and then a little way into the Fallopian tubes. If the woman has ovulated, they should meet there in the tubes. The egg will travel further down into the uterus and the embryo will attach and embed into the uterine wall.
The neck of the uterus is the cervix.
The cervix is the opening to the uterus, so you'd have to go through it to get to the uterus.
The cervix is located at the top of the vaginal canal, it is the opening to the uterus or womb.The hymen is tissue that surrounds the vaginal opening, it serves no function or purpose.
Cervix
The cervix is the neck-shaped opening at the lower part of the uterus.
The outer cervical os is the opening in the uterine cervix (the neck of the uterus) closer to the vagina. Its counterpart is the interior cervical os, which is opening in the cervix closer to the uterus.
The cervix is located inside a woman's vagina. The vaginal opening is an opening to the vaginal canal that leads to the cervix. The cervix is a tiny hole the shape of a doughnut that leads to a woman's uterus.