AP Biology : Understanding Other Reproductive Physiology
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Example Question #71 : Understanding Other Reproductive Physiology
Which of the following is not true regarding Braxton Hicks contractions?
They occur throughout pregnancy
They are uterine contractions
They signify the beginning of labor
They prepare the mother for childbirth
They signify the beginning of labor
Braxton Hicks contractions are mild and irregular uterine contractions that are believed to prepare the mother for childbirth. The contractions may begin during the first trimester, but are often only noticed during the second and third trimesters of pregnancy.
Example Question #1347 : Ap Biology
Which of the following muscles contra to help deliver the baby during labor?
Uterine
Fallopian
Cervical
Vaginal
Uterine
During labor, uterine contractions help dilate the cervix and descend the baby into the birth canal. As labor progresses, contractions become regular and occur more frequently. As the contractions continue to bear down on the fetus, the labor process is aided by maternal pushing.
Example Question #72 : Understanding Other Reproductive Physiology
Which of the following best describes the direct effect of uterine contractions during labor?
Neither fetal descent nor cervical dilation
Fetal descent
Cervical dilation
Both cervical dilation and fetal descent
Both cervical dilation and fetal descent
Uterine contractions during labor help the fetus descend into the birth canal and aid cervical dilation.
Example Question #72 : Understanding Other Reproductive Physiology
Which of the following best describes what occurs physiologically when a woman’s “water breaks”?
Descent of the baby into the birth canal
Rupture of the amniotic sac
Expulsion of the placenta
Detachment of the umbilical cord
Rupture of the amniotic sac
The rupture of the amniotic sac during birth is commonly said to be when a woman’s “water breaks.” This typically occurs at the beginning of labor, but sometimes has to be ruptured by a medical professional. The rupture decreases cushioning of the fetus and increases pressure of the contractions, aiding the descent of the fetus into the birth canal.
Example Question #1350 : Ap Biology
Which of the following best describes when a pregnancy is considered to be “full term”?
30 to 31 weeks
37 to 38 weeks
39 to 41 weeks
33 to 35 weeks
39 to 41 weeks
A woman is said to be “full term” when she is at 39 to 41 weeks of pregnancy. Medical intervention to induce labor during this time is not ideal.
Example Question #73 : Understanding Other Reproductive Physiology
Which of the following is a complication associated with pregnancy?
All of these
Postpartum depression
Ectopic pregnancy
Preeclampsia
Anemia
All of these
Pregnancy related medical conditions and complications are incredibly common due to strain on the mother and extreme biological changes associated with pregnancy. Examples include postpartum depression, anemia, preeclampsia, and ectopic pregnancy.
Example Question #74 : Understanding Other Reproductive Physiology
Which of the following best describe methods that are used to prevent premature births?
Reducing the mother's activity
All of these
Avoiding stress
Nutritional supplements
Screening for complications
All of these
Premature birth is the leading cause of death in newborns. While the exact causes of premature birth are not completely understood, certain methods may work to prevent it. These methods include nutritional supplements, avoiding stress, screening for complications, and reduction in activity.
Example Question #1353 : Ap Biology
Which of the following must occur in order to deliver the shoulders of the fetus?
The mother needs to stop pushing
None of these
Release of the placenta
Fetal rotation in the birth canal
Breech of the fetus
Fetal rotation in the birth canal
In order to deliver the fetal shoulders, the fetus needs to rotate in the birth canal.
Example Question #75 : Understanding Other Reproductive Physiology
Which of the following best defines the delivery term “crowning”?
Clamping of the umbilical cord
The rotation of the fetus to allow for shoulder delivery
Dilation of the cervix to 10cm
Appearance of the fetal head at the vagina
None of these
Appearance of the fetal head at the vagina
During delivery, the term “crowning” refers to the appearance of the fetal head at the vaginal opening. This happens after the cervix is fully dilated and the mother begins pushing.
Example Question #76 : Understanding Other Reproductive Physiology
Which of the following is true regarding cervical dilation?
None of these
Cervical dilation only occurs just before "crowning"
It is a result of uterine contractions
Cervical dilation cannot be induced medically
Cervical dilation is not incremental
It is a result of uterine contractions
Cervical dilation is the thinning and widening of the cervix to allow for fetal passage into the birth canal. Cervical dilation is a result of uterine contractions and may begin naturally or can be medically induced to start labor. As labor continues, the cervix will continue to dilate until reaching until it reaches 10cm. At this point, delivery can take place. Indicators of cervical dilation include the release of the mucus plug, blood, and pain.
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