The student nurse learns that the hormone necessary for milk production is

Estrogen.

Prolactin.

Progesterone.

Lactogen.

Answer and Explanation

The Correct Answer is B

The correct answer is choice B. Prolactin.

Choice A reason:

Estrogen. Estrogen is a hormone that plays a role in the development of the mammary glands and the ductal system during pregnancy. However, estrogen does not directly produce milk.

In fact, high levels of estrogen during pregnancy inhibit milk secretion by blocking prolactin. Therefore, estrogen is not the hormone necessary for milk production. • Choice B reason:

Prolactin. Prolactin is the hormone responsible for the production of breast milk. Prolactin is secreted by the pituitary gland in response to suckling or nipple stimulation. Prolactin levels rise during pregnancy and peak after delivery, when the sudden drop in estrogen and progesterone allows prolactin to take over and initiate lactation. Therefore, prolactin is the hormone necessary for milk production. • Choice C reason:

Progesterone. Progesterone is a hormone that also contributes to the development of the mammary glands and the alveoli during pregnancy. However, like estrogen, progesterone does not directly produce milk. Progesterone also inhibits milk secretion by blocking prolactin during pregnancy. Therefore, progesterone is not the hormone necessary for milk production. •

Choice D reason:

Lactogen. Lactogen is not a hormone, but a general term for any substance that stimulates lactation. There are different types of lactogens, such as human placental lactogen (hPL), which is produced by the placenta during pregnancy and has some lactogenic effects on the mammary glands. However, hPL is not the main hormone responsible for milk production. That role belongs to prolactin. Therefore, lactogen is not the hormone necessary for milk production.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is C

Explanation

The correct answer is c. Dehydration. A significantly indented anterior fontanelle in a newborn is most commonly a sign of dehydration.

Choice A reason:

Increased intracranial pressure: This statement is incorrect because increased intracranial pressure typically causes a bulging, not indented, fontanelle. Symptoms include irritability, vomiting, and a high-pitched cry.

Choice B reason:

Vernix caseosa: This statement is incorrect because vernix caseosa is a white, cheesy substance covering the skin of newborns, unrelated to fontanelle indentation. It serves as a protective layer for the baby’s skin.

Choice C reason:

Dehydration: This statement is correct. Dehydration in newborns can cause a sunken fontanelle due to the loss of fluid. Other signs include dry mouth, sunken eyes, and fewer wet diapers.

Choice D reason:

Cyanosis: This statement is incorrect because cyanosis refers to a bluish discoloration of the skin due to lack of oxygen, not related to fontanelle shape. It indicates issues with oxygenation or circulation.

A. Hypothermia. B. Deficient fluid volume. C. Impaired gas exchange. D. Risk for infection.

Correct Answer is A

Explanation

Choice A reason:

Hypothermia is the priority area for this newborn because the axillary temperature of 95.8° F (35.4° C) is below the normal range of 97.7° F to 99.5° F (36.5° C to 37.5° C) for newborns1. Hypothermia can lead to complications such as hypoglycemia, metabolic acidosis, and impaired oxygen delivery2. The nurse should initiate interventions to warm the newborn, such as skin-to-skin contact, radiant warmer, or swaddling2.

Choice B reason:

Deficient fluid volume is not the priority area for this newborn because the apical pulse of 114 beats per minute is within the normal range of 100 to 160 beats per minute for newborns345. A low pulse rate can indicate dehydration or shock in newborns2. The nurse should monitor the newborn's fluid intake and output, weight, and signs of dehydration, such as dry mucous membranes, sunken fontanels, and poor skin turgor2.

Choice C reason:

Impaired gas exchange is not the priority area for this newborn because the respiratory rate of 60 breaths per minute is within the normal range of 30 to 60 breaths per minute for newborns345. A high or low respiratory rate can indicate respiratory distress or failure in newborns2. The nurse should assess the newborn's breath sounds, chest movements, oxygen saturation, and signs of respiratory distress, such as nasal flaring, grunting, retractions, and cyanosis2.

Choice D reason:

Risk for infection is not the priority area for this newborn because there is no evidence of infection in the vital signs or the question stem. However, newborns are vulnerable to infection due to their immature immune systems and exposure to pathogens during birth and aftercare2. The nurse should follow infection control measures, such as hand hygiene, aseptic technique, and cord care, and educate the parents on how to prevent infection at home2.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

The student nurse learns that the hormone necessary for milk production is

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse notices while holding him upright that a 1-day-old newborn has a significantly indented anterior fontanelle. She immediately brings it to the attention of the physician. What does this finding most likely indicate?

Correct Answer is C

Explanation

When assessing a newborn 1 hour after birth, the nurse measures an axillary temperature of 95.8° F (35.4° C), an apical pulse of 114 beats per minute, and a respiratory rate of 60 breaths per minute. The nurse would identify which area as the priority?

Correct Answer is A

Explanation

A nurse is caring for a client who is at 40 weeks gestation and is in active labor. The client has 6 cm of cervical dilation and 100% cervical effacement. The nurse obtains the client's blood pressure reading as 82/52 mm Hg. Which of the following nursing interventions should the nurse perform?

A client in latent phase of labor for the past 12 hours is requesting medication to help her rest.

One side effect of oxytocin stimulation is hypertonic contractions. This can be detrimental to the fetus because

A nurse receives handoff report. Which newborn should the nurse assess first?

An infant's axillary temperature is 35.9C (96.6F). The priority nursing action is to:

The nurse explains to the parents of a 2-day-old newborn that decreased life span of neonatal red blood cells has contributed to which complication?

To prevent heat loss from convection in a newborn, which action by the nurse is best?

A nurse is caring for a client who is 2 hours postpartum following a vaginal birth. Which of the following findings indicates the client's bladder is distended?