AP Biology : Reproductive Physiology

Study concepts, example questions & explanations for AP Biology

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Example Questions

Example Question #151 : Reproductive Physiology

Which of the following best describe methods that are used to prevent premature births?

Possible Answers:

Screening for complications

Reducing the mother's activity

Avoiding stress

All of these

Nutritional supplements

Correct answer:

All of these

Explanation:

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?

Possible Answers:

Release of the placenta

The mother needs to stop pushing

Breech of the fetus

Fetal rotation in the birth canal

None of these

Correct answer:

Fetal rotation in the birth canal

Explanation:

In order to deliver the fetal shoulders, the fetus needs to rotate in the birth canal.

Example Question #161 : Reproductive System

Which of the following best defines the delivery term “crowning”?

Possible Answers:

The rotation of the fetus to allow for shoulder delivery 

Dilation of the cervix to 10cm

Clamping of the umbilical cord

Appearance of the fetal head at the vagina

None of these

Correct answer:

Appearance of the fetal head at the vagina

Explanation:

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 #162 : Reproductive System

Which of the following is true regarding cervical dilation?

Possible Answers:

Cervical dilation is not incremental

Cervical dilation cannot be induced medically

Cervical dilation only occurs just before "crowning"

None of these

It is a result of uterine contractions

Correct answer:

It is a result of uterine contractions

Explanation:

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.

Example Question #154 : Reproductive Physiology

Which of the following is a method used to induce labor?

Possible Answers:

Administering prostaglandins to dilate the cervix

Artificially rupturing the amniotic sac

None of these

All of these

Nipple stimulation

Correct answer:

All of these

Explanation:

In cases of maternal or fetal complications, labor may be medically induced. These methods typically aim to trigger the body to naturally begin labor. They include artificially rupturing the amniotic sac (“breaking the water”), nipple stimulation, and administering prostaglandins.

Example Question #163 : Reproductive System

Which of the following parts of the female body is where the fetus is surgically removed during caesarian sections?

Possible Answers:

None of these

Birth canal

Vagina

Uterus

Uterine wall

Correct answer:

Uterus

Explanation:

A caesarian section is a method to deliver the fetus surgically. During the procedure, an incision is made in the mother’s abdomen and uterus to remove the fetus. Caesarian sections are used in the case of pregnancy and labor complications, but they can also be undertaken electively.

Example Question #156 : Reproductive Physiology

Which of the following is a technological development targeted at improved care for premature infants?

Possible Answers:

Caesarian sections

Incubation in neonatal intensive care units

All of these

Skin-skin contact

Pain medications

Correct answer:

Incubation in neonatal intensive care units

Explanation:

Neonatal intensive care units are highly developed and specialized units that house premature infants. These units provide the following advances in neonatal care: temperature regulation, protection, nutrition, and the administration of medications.

Example Question #157 : Reproductive Physiology

Which of the following is true regarding postpartum depression?

Possible Answers:

It can interfere with mother-infant bonding

None of these

It is only recognized by western civilizations

It only occurs during pregnancy

No clinical evidence of postpartum depression has been found

Correct answer:

It can interfere with mother-infant bonding

Explanation:

Postpartum depression is a condition that may occur in women that have recently given birth. It is a type of clinical depression that is recognized by the medical community and is found in mothers all over the world. Symptoms of postpartum depression include low energy, anxiety, and mood changes. Postpartum depression may interfere with mother-infant bonding. Methods to prevent postpartum depression include peer support and antidepressants.

Example Question #158 : Reproductive Physiology

Which of the following best describes the role of oxytocin in delivery?

Possible Answers:

Prevents cervical dilation

Directly releases the cervical mucus plug

All of these

Stimulates the expulsion of the fetus

High levels increase the risk for postpartum depression

Correct answer:

Stimulates the expulsion of the fetus

Explanation:

During childbirth, oxytocin stimulates fetal expulsion through cervical dilation and uterine contractions. Oxytocin is also important in the development of maternal feelings of attachment to the fetus and plays a role in lactation.

Example Question #159 : Reproductive Physiology

Which of the following is a method of instrumental child delivery?

Possible Answers:

Vacuum extraction and forceps

Pliers

Forceps

Vacuum extraction

Labor induction via prostaglandins

Correct answer:

Vacuum extraction and forceps

Explanation:

Instrumental delivery is the delivery of an infant through the use of medical instruments. This is used in the case of difficult deliveries and labor complications. Instruments that are commonly used include the vacuum extractor and forceps.

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