A nurse shows an understanding of growth and development occurring in the first 3 weeks ...

Correct Answer: 1,2,4
Rationale 1: Events occurring concurrently during the first 3 weeks include the embryo's being implanted in the endometrium of the uterus.
Rationale 2: Events occurring concurrently during the first 3 weeks include fetal membranes' differentiating into the chorionprecursor to the placentaand the amnion, precursor to the amniotic sac.
Rationale 3: At the end of the second trimester, or 6 lunar months, a protective covering called vernix caseosa begins to develop over the skin.
Rationale 4: Events occurring concurrently during the first 3 weeks include the function of the placenta.
Rationale 5: At the end of the second trimester, or 6 lunar months, lanugoa fine downy haircovers the body.