NCLEX : Reproductive Physiology

Study concepts, example questions & explanations for NCLEX

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Example Questions

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Example Question #81 : General Biology

Which of the following is not a role of oxytocin?

Possible Answers:

It triggers uterine contractions during labor

Increases appetite

It is involved in wound healing

It stimulates contentment and pleasure in social relationships

Correct answer:

Increases appetite

Explanation:

Oxytocin, a nonapeptide hormone produced in the hypothalamus, has a variety of physiological roles. It increases trust, generosity, and other markers of social cohesion. In intimate relationships, it increases feelings of affection, love, sexual arousal, and contentment. It is an important hormone in labor, as it triggers contractions both during labor and postpartum in order to reduce bleeding and uterine size after delivery. It also acts as an immune modulator in wound healing. It does not, however, increase appetite - studies have shown it to have the opposite effect, acting as an appetite suppressant in human and animal models. 

Example Question #82 : General Biology

Which of the following terms describes the thinning and shortening of the cervix that occurs during labor?

Possible Answers:

Bloody-show

Transition

Dilation

Effacement

Correct answer:

Effacement

Explanation:

During the later stages of labor, the cervix, normally a four centimeter-long muscular sphincter, releases its mucus plug, then thins and shortens. The release of the mucus plug is termed the "bloody-show," and the thinning and shortening of the cervix is called effacement. Cervical effacement is almost always accompanied by cervical dilation, or a widening of the os in order to allow passage of the fetus. This all happens in the transition phase of labor. 

Example Question #41 : Reproductive Physiology

At what point during labor is the cervix considered to be fully dilated?

Possible Answers:

Correct answer:

Explanation:

The cervix is considered to be fully dilated at . This suggests the transition phase of active labor, in which the individual is instructed to bear down (push) in order to facilitate delivery. 

Example Question #91 : Other General Biology

How does blood plasma volume change over the course of a normal pregnancy?

Possible Answers:

Increases by 50%

Decreases by 10%

Decreases by 25%

Increases by 25%

Correct answer:

Increases by 50%

Explanation:

During a normal pregnancy, the volume of blood plasma increases by 50%. The erythrocyte count also increases, by as much as 30%. This may cause the hematocrit to appear lower than normal, due to dilution by the relatively larger increase in plasma. 

Example Question #92 : Other General Biology

What hormone is responsible for triggering nausea and vomiting of pregnancy ("morning sickness")?

Possible Answers:

Human chorionic gonadotropin (hCG)

Corticotropin-releasing hormone (CRH)

Didehydroepiandrosterone (DHEA)

Aldosterone

Correct answer:

Human chorionic gonadotropin (hCG)

Explanation:

While research is still being conducted to determine the cause of nausea and vomiting of pregnancy, it generally correlates with the surge in human chorionic gonadotropin (hCH) that occurs in the first trimester. Estrogen may be another contributing hormone. Aldosterone, DHEA, and corticotropin-releasing hormone (CRH) have no apparent involvement.

Example Question #93 : Other General Biology

Most at-home or in-office pregnancy tests detect what hormone?

Possible Answers:

Estrogen

Human chorionic gonadotropin (hCG) 

Progesterone

Prolactin

Correct answer:

Human chorionic gonadotropin (hCG) 

Explanation:

Most pregnancy tests detect human chorionic gonadotropin (hCG), a hormone produced by the embryo that is detectable shorty after implantation (10-14 days after fertilization). The function of hormone is to mimic the effects of luteinizing hormone, ultimately preserving the corpus luteum, which secretes progesterone. The progesterone maintains and vascularizes the uterus, making it a more favorable environment for the implanted embryo.

Example Question #93 : General Biology

A nurse is educating a group of young females about the physiology of fetal development. The nurse explains the stages of how a young fetus over time will develop and what special events take place over time. 

Which of the following events is correctly paired in regards to expected fetal development?

Possible Answers:

15 weeks - the eyes are open

8 weeks - sex of the child is recognizable

10 weeks - lanugo grows

20 weeks - heartbeat first heard with a stethoscope

12 weeks - quickening occurs

Correct answer:

20 weeks - heartbeat first heard with a stethoscope

Explanation:

The time frame correctly matched is at 20 weeks, the heartbeat is heard with a stethoscope although it may be heard with ultrasound as early as 10-12 weeks. Quickening usually occurs around 20 weeks as well. The eyes open later between 24-27 weeks, lanugo first appears between 13-16 weeks, and the sex is recognizable around 12 weeks. 

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