Question

What is located at the neck of the uterus (bottom of the uterus) and must efface and dilate during labor to aid the delivery of the baby?

Answer 1

The uterus is a female reproductive organ. This is the region where a developing fetus is located. The uterus is a smooth wall organ that is quite small and leads to the vagina.

Complete answer:
The portion at the neck or bottom of the uterus is known as the cervix. This portion of the uterus is located in the entrance to the vagina. There are cells in the cervical tissue that secretes the cervical mucus. The cervix is the portion that is at the base of the uterus and this is the portion that needs to open up to allow childbirth.
During birth, the cervix plays a major role. It starts to efface which means that the cervical tissue becomes thinner. The cervix will also start to dilate to allow the infant to come out through the vagina. The tissues of the cervix will gradually start to dilate and efface more and more during labour. This can also give an indication about when the birth will occur.

Note:
The portion that is at the neck of the uterus is the cervix. This portion plays a significant part in childbirth. It effaces and dilated to allow the infant to come out. The dilation of the cervix also helps doctors as they can tell how close the mother is to giving birth by checking the cervix.