The phrase "mouth of the womb" is spelled phonetically as /maʊθ əv ðə wuːm/. The use of the /θ/ sound for the "th" in "mouth" and "womb" indicates a voiceless dental fricative, which means that the tongue is placed between the teeth to produce a hissing sound. The vowel sounds in "mouth" and "womb" are both pronounced as the diphthong /aʊ/, which involves a transition from a higher to a lower tongue position. This phrase refers to the opening of the cervix during childbirth.
The term "mouth of the womb" refers to the external opening of the uterus, also known as the cervix, through which a baby passes during childbirth. It is the lower part of the uterus that connects to the vagina. In anatomical terms, it is described as a circular muscular structure that acts as a barrier between the uterus and the vagina.
During pregnancy, the mouth of the womb remains tightly closed to protect the developing fetus and to keep any foreign substances from entering the uterus. However, as the end of pregnancy approaches, hormonal changes and uterine contractions work together to gradually soften and thin out the cervix, a process known as "cervical ripening."
When a woman goes into labor, the mouth of the womb starts to dilate and efface (thin out) so that the baby can descend through the birth canal and be born. The opening of the mouth of the womb typically expands to around 10 centimeters in diameter during labor, allowing the baby's head to pass through.
The condition of the mouth of the womb, such as its thickness, dilation, and effacement, is often assessed by healthcare professionals to determine the stage and progress of labor. In some cases, medical intervention may be required to artificially induce or augment labor if the mouth of the womb fails to dilate or efface adequately.
Os uteri, os tincae.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.