Birth canal (vagina).
The vagina is part of the female reproductive system.
Grand Canal
The uterus does not truly connect to the outside of the body. The neck of the uterus ends in the portion we call the cervix. The cervix sits at the very top of the vagina, which is all inside the body. The vagina is what actually 'connects' to the outside of a woman's body. It is a passageway, like a dead end hallway, which ends at the cervix. The cervix is like the tip of a nose protruding into the very top of a vagina. The cervix feels just like the tip of a nose, except the cervix has one very tiny slit while the nose has two much larger nostrils (larger than the slit in the cervix.
Once the cervix is dilated to 10 cm, then the baby comes out of the uterus through the cervix and travels to the vagina where it is born.
The uterus is divided into three main parts: the fundus (upper portion), the body (middle portion), and the cervix (lower portion). The cervix further consists of the inner cervical canal, which connects the uterus to the vagina, and the outer cervical os, which is the opening of the canal into the vagina.
Canal
The Cervix. P.S. you should read your health book. :-P
The vaginal walls are the borders of the opening that leads from the outside of the body to the cervix. They are muscular and flexible.
The cervix sits higher, it becomes thicker and develops a bluish color, very early in pregnancy. It eventually opens so that the baby can proceed through the birthing canal and out of the mother's body.
A man made narrow body of water connecting two larger bodies is a canal. A natural feature that connects two bodies of water is called a strait.
The female sex organs include the ovaries, fallopian tubes, uterus, cervix, and vagina. The ovaries produce eggs and hormones, while the fallopian tubes transport eggs to the uterus. The uterus is where a fertilized egg implants and grows into a fetus. The cervix is the lower part of the uterus that connects to the vagina. The vagina is the canal that connects the uterus to the outside of the body and is also the site for sexual intercourse and childbirth.
The neck area is the cervical region of the body. But the term "cervix" is also used for other organs that have narrow parts, and "cervical cancer" means "cancer in the cervix of the uterus". "Head and neck cancers" are a group of cancers that occur inside the mouth, nose etc.