What occurs in the embryonic stage of fetal development?
Maturation of germ cells in ovaries
Gender differentiation takes place
Implantation begins
Differentiation begins
The Correct Answer is B
A. Maturation of germ cells in ovaries – Incorrect; this occurs later in fetal development and after birth.
B. Gender differentiation takes place – Correct; the embryonic stage (weeks 3-8) is when gender differentiation occurs at around week 7-8.
C. Implantation begins – Incorrect; implantation happens in the blastocyst stage (week 1-2), before the embryonic stage.
D. Differentiation begins – Incorrect; cell differentiation starts earlier, in the blastocyst stage, before full embryonic development.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Halfway between the symphysis pubis and the umbilicus. – Correct; at 16 weeks, the fundus is typically midway between the symphysis pubis and the umbilicus.
B. Just above the pubic bone – Incorrect; the fundus is at the pubic symphysis at 12 weeks, not 16 weeks.
C. The uterus would not be palpable at 16 weeks – Incorrect; the uterus is palpable by 12 weeks and grows above the symphysis pubis as pregnancy progresses.
D. At the umbilicus – Incorrect; the fundus reaches the umbilicus at 20 weeks, not 16 weeks.
Correct Answer is A
Explanation
A. Massaging the client's back – Correct; gate control theory states that non-painful stimuli (e.g., massage, heat, cold) can block pain signals from reaching the brain.
B. Administering prescribed analgesic medication – Incorrect; this is pharmacologic pain relief, not part of gate control theory.
C. Turning the client onto her left side – Incorrect; this improves circulation but does not block pain signals.
D. Encouraging the client to rest between contractions – Incorrect; rest is important but does not directly affect pain perception.
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