Question

Braxton-Hicks contractions, which may begin in the first trimester and become increasingly stronger during the pregnancy, differ from labor contractions in that they:

a. last several minutes.
b. are always regular.
c. do not dilate the cervix.
d. are only mild.

Answer 1

Braxton-Hicks contractions are characterized by their lack of effect on cervical dilation, setting them apart from true labor contractions which facilitate the process of childbirth by dilating and effacing the cervix.

Step-by-step explanation:

Braxton-Hicks contractions differ from true labor contractions in that they do not dilate the cervix.Braxton-Hicks contractions, often referred to as false labor, are a common experience during pregnancy, known to start as early as the first trimester. While they may increase in strength throughout the pregnancy, these contractions are typically irregular, don't become consistently more intense or frequent over time, and often subside with rest or hydration. Unlike true labor, Braxton-Hicks do not lead to cervical dilation and effacement, which are necessary for childbirth.

True labor contractions are part of a positive feedback loop—where the stretching of the cervix triggers reflexive contractions that further dilate and efface the cervix, accompanied by increased oxytocin levels that intensify the contractions. They become progressively more regular, painful, frequent, and last longer as labor advances, ultimately facilitating the expulsion of the baby and placenta.