Part A An embryo becomes a fetus at about ____ after fertilization. 3 months 2 weeks 1 month 9 weeks
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Step 1: An embryo becomes a fetus at about 8 weeks after fertilization. Show more…
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The transition from embryo to fetus occurs a. immediately after fertilization. b. after the first month. c. at the ninth week. d. at the seventh month.
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A 26-year-old woman comes to the physician because she has not had a menstrual period for 5 weeks. Menarche was at the age of 14 years and menses occurred at regular 30-day intervals. She reports having unprotected sexual intercourse 3 weeks ago. A urine pregnancy test is positive. Which of the following best describes the stage of development of the embryo at this time? Implantation has occured, but notochord has not yet formed B. Limb buds have formed, but fetal movements have not begun C. Neural crest has formed, but limb buds have not yet formed D. Sexual differentiation has begun, but fetal movement has not started E. Fetal heart is beating, but cardiac activity is not yet visible on ultrasound
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