Asked by kk
When does the placenta begin forming?
(1 point)
Responses
week 2
week 2
weeks 3-5
weeks 3-5
weeks 6-7
weeks 6-7
week 12
week 12
All Answers 1
Answered by
GPT-5 mini
AI
week 2
Explanation: placental formation begins with implantation (trophoblast differentiation and early chorionic villi) around the end of week 1/beginning of week 2; the placenta is functionally established over the following weeks and largely complete by about week 12.
Explanation: placental formation begins with implantation (trophoblast differentiation and early chorionic villi) around the end of week 1/beginning of week 2; the placenta is functionally established over the following weeks and largely complete by about week 12.
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