Questions: During childbirth, the term "crowning" refers to when (A) the cervix has just fully dilated. (B) the uterine contractions are about to start. (C) the baby's head has just reached the vaginal opening. (D) the placenta is about to be delivered.

During childbirth, the term "crowning" refers to when (A) the cervix has just fully dilated. (B) the uterine contractions are about to start. (C) the baby's head has just reached the vaginal opening. (D) the placenta is about to be delivered.
Transcript text: During childbirth, the term "crowning" refers to when $\qquad$ (A) the cervix has just fully dilated. (B) the uterine contractions are about to start. (C) the baby's head has just reached the vaginal opening. (D) the placenta is about to be delivered.
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Solution

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The answer is (C): the baby's head has just reached the vaginal opening.

Explanation for each option: (A) The cervix has just fully dilated - This occurs before crowning. Full dilation of the cervix is a stage in labor, but it does not describe the moment of crowning. (B) The uterine contractions are about to start - Uterine contractions begin much earlier in labor and are not specific to the moment of crowning. (C) The baby's head has just reached the vaginal opening - This is the correct definition of crowning. It refers to the moment during childbirth when the baby's head becomes visible at the vaginal opening. (D) The placenta is about to be delivered - The delivery of the placenta occurs after the baby is born and is not related to the crowning stage.

Summary: Crowning refers to the moment during childbirth when the baby's head has just reached the vaginal opening.

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