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: Low birth weight is not a common complication of GDM, as the fetus tends to grow larger than normal due to the excess glucose and insulin in the blood. Low birth weight is more likely to occur in infants of mothers with preexisting diabetes or other conditions that affect placental function.
Choice B reason: Preterm birth is a possible complication of GDM, as the increased fetal size and the risk of maternal hypertension or infection may induce labor before term. However, it is not the greatest risk for the fetus, as preterm infants can survive with proper care and treatment.
Choice C reason: Macrosomia is the greatest risk for the fetus of a mother with GDM, as it is defined as a birth weight of more than 4000 g or 8 lb 13 oz. Macrosomia can cause difficulties during labor and delivery, such as shoulder dystocia, birth trauma, or cesarean birth. It can also increase the risk of neonatal hypoglycemia, jaundice, or respiratory distress.
Choice D reason: Congenital anomalies of the central nervous system are not a common complication of GDM, as they usually occur in the first trimester of pregnancy, before GDM is diagnosed or develops. Congenital anomalies are more likely to occur in infants of mothers with preexisting diabetes or other genetic or environmental factors.
Correct Answer is B
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: Placenta previa is a condition where the placenta implants in the lower uterine segment and may cover or be near the cervical internal os. When the placental edge just reaches the internal os but does not cover it, it is called a marginal previa.
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: "Partial placenta previa" refers to a situation where the placenta partially covers the internal cervical os — meaning some, but not all, of the opening is obstructed by placental tissue.
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