The student nurse learns that the hormone necessary for milk production is
Estrogen.
Prolactin.
Progesterone.
Lactogen.
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
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
The cord is still pulsating. This is not the first thing a nurse must ensure when the head comes out because the cord normally pulsates until the placenta is delivered. The pulsation indicates that the cord is still functioning and transferring blood and oxygen between the baby and the placenta. However, this does not mean that the cord is free from any complications that could endanger the baby's life, such as a nuchal cord (a cord wrapped around the neck) or a prolapsed cord (a cord that slips out before the baby). • Choice B reason:
The cord is intact. This is not the first thing a nurse must ensure when the head comes out because the cord is usually intact until it is clamped and cut after the delivery of the baby. The cord can be ruptured by excessive traction or twisting, which can cause bleeding and shock in the baby. However, this is a rare occurrence and does not pose an immediate threat to the baby's life as long as the cord is still attached to the placenta. • Choice C reason:
No part of the cord is encircling the baby's neck. This is the correct answer because a nuchal cord can cause compression of the cord and reduce blood flow and oxygen to the baby, leading to fetal distress, hypoxia, and brain damage. A nuchal cord occurs in about 10 to 30 percent of deliveries and can be detected by feeling for a loop of cord around the neck as the head emerges. If a nuchal cord is present, it should be gently slipped over the head or clamped and cut before delivery of the shoulders. • Choice D reason:
The cord is still attached to the placenta. This is not the first thing a nurse must ensure when the head comes out because the cord is always attached to the placenta until it separates from the uterine wall and is expelled after the delivery of the baby. The placenta provides nourishment and oxygen to the baby through the cord. However, this does not mean that the cord is free from any complications that could endanger the baby's life, such as a nuchal cord or a prolapsed cord.
Correct Answer is B
Explanation
Choice A reason:
Lochial color changes from rubra to alba in the early postpartum period is a normal event. Lochia is the vaginal discharge that occurs after childbirth, and it progresses from bright red (rubra) to pink or brownish (serosa) to whitish-yellow (alba) as the days pass.
Choice B reason:
Extreme hunger and thirst in the early postpartum period may indicate abnormal blood sugar levels and can be a sign of gestational diabetes or other metabolic disorders. It requires further evaluation and monitoring by healthcare providers.
Choice C reason:
Diuresis (increased urination) and diaphoresis (increased sweating) are normal events in the early postpartum period. After childbirth, the body eliminates excess fluid that was retained during pregnancy, leading to increased urination and sweating.
Choice D reason:
Flatulence (passing gas) and constipation can be normal events in the early postpartum period due to the body recovering from the effects of labor, changes in diet, and the use of pain medications during childbirth.
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