The hormone responsible for maturation of mammary gland tissue is:
progesterone.
testosterone.
prolactin.
estrogen.
The Correct Answer is A
Choice A reason: Progesterone is the hormone that stimulates the development of the alveoli and lobules of the mammary glands during pregnancy. It prepares the breasts for lactation by increasing the number and size of the milk-producing cells.
Choice B reason: Testosterone is the main male sex hormone that is responsible for the development of male reproductive organs and secondary sex characteristics. It has no direct role in the maturation of mammary gland tissue.
Choice C reason: Prolactin is the hormone that initiates and maintains milk production after childbirth. It is secreted by the anterior pituitary gland in response to suckling or nipple stimulation. It does not affect the maturation of mammary gland tissue.
Choice D reason: Estrogen is the hormone that stimulates the growth of the duct system of the mammary glands during puberty and pregnancy. It also promotes the development of female reproductive organs and secondary sex characteristics. It does not affect the maturation of mammary gland tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: A sleepy, sedated affect is not a concerning sign, as it is a common side effect of magnesium sulfate. Magnesium sulfate is a central nervous system depressant that can cause drowsiness, lethargy, and reduced alertness.
Choice B reason: Absent ankle clonus is not a concerning sign, as it indicates a normal neuromuscular response. Ankle clonus is a rhythmic jerking of the foot when the ankle is dorsiflexed. It is a sign of hyperreflexia, which can occur in severe preeclampsia due to increased blood pressure and cerebral edema.
Choice C reason: A respiratory rate of 10 breaths/min is a concerning sign, as it indicates respiratory depression. This is a serious complication of magnesium sulfate toxicity, which can lead to respiratory arrest and death. The nurse should monitor the woman's respiratory rate closely and report any signs of respiratory distress.
Choice D reason: Deep tendon reflexes of 2+ are not a concerning sign, as they indicate a normal neuromuscular response. Deep tendon reflexes are graded from 0 to 4, with 2 being the average. Magnesium sulfate can cause hyporeflexia or areflexia, which are signs of magnesium sulfate toxicity.
Correct Answer is D
Explanation
Choice A reason: A total placenta previa is when the placenta completely covers the internal os, blocking the baby's exit from the uterus.
Choice B reason: A marginal placenta previa is when the placental edge just reaches the internal os, but does not cover it. This is the most common type of placenta previa and usually resolves on its own as the pregnancy progresses.
Choice C reason: A complete placenta previa is when the placenta partially covers the internal os, reducing the space for the baby to pass through.
Choice D reason: A partial placenta previa is when the placenta partially covers the internal os, reducing the space for the baby to pass through. This is similar to a complete placenta previa, but less severe.
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