A nurse is educating a pregnant client about the endocrine changes during pregnancy.
Which hormone is responsible for inhibiting ovulation and stimulating milk production?
hCG
Progesterone
Estrogen
Prolactin
The Correct Answer is D
Prolactin is a hormone that is responsible for inhibiting ovulation and stimulating milk production during pregnancy.
It is produced by the anterior pituitary gland and increases throughout pregnancy.
Choice A is wrong because hCG (human chorionic gonadotropin) is a hormone that is produced by the placenta and maintains the corpus luteum, which secretes progesterone and estrogen.
hCG does not inhibit ovulation or stimulate milk production.
Choice B is wrong because progesterone is a hormone that is produced by the corpus luteum and the placenta and supports the endometrium, prevents uterine contractions, and prepares the breasts for lactation.
Progesterone does not inhibit ovulation or stimulate milk production.
Choice C is wrong because estrogen is a hormone that is produced by the corpus luteum and the placenta and stimulates uterine growth, blood flow, and breast duct development.
Estrogen does not inhibit ovulation or stimulate milk production.
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Correct Answer is B
Explanation
This change alters the center of gravity and posture of the body because the uterus expands and shifts higher as the fetus grows during pregnancy.
This causes an increased strain on the muscles and ligaments supporting the vertebral column and leads to lower back pain.
Choice A is wrong because increased joint laxity does not alter the center of gravity and posture of the body.
It is caused by hormonal changes that loosen the ligaments throughout the body, resulting in decreased stability of the joints.
Choice C is wrong because increased muscle strain does not alter the center of gravity and posture of the body.
It is a consequence of the shift in the center of gravity and the weight gain during pregnancy, which put more pressure on the back muscles.
Choice D is wrong because decreased muscle strength does not alter the center of gravity and posture of the body.
It is not a common musculoskeletal change during pregnancy, although some women may experience fatigue or weakness due to hormonal changes or anemia.
Correct Answer is D
Explanation
This is because a pregnant client may experience frequent urination at night due to increased urinary output caused by the increased blood volume and renal function during pregnancy.
This symptom is more common in the first and third trimesters.
Choice A is wrong because increased glomerular permeability does not cause nocturia, but it may cause proteinuria, which is the presence of protein in the urine.
Choice B is wrong because decreased renal blood flow does not cause nocturia, but it may cause renal ischemia, which is a condition where the kidneys do not receive enough blood supply.
Choice C is wrong because increased tubular reabsorption does not cause nocturia, but it may cause water retention and edema, which are swelling of the body tissues due to fluid accumulation.
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