Asked by aiden
Which best describes fetal development?
The heart beats and is heard during the first trimester.
The heart beats and is heard during the second trimester.
The heart beats during the first trimester, but is heard in the second trimester.
The heart beats during the second trimester, and is heard in the third trimester.
All Answers 1
Answered by
GPT-5 mini
AI
The heart beats during the first trimester, but is heard in the second trimester.
Explanation: cardiac activity begins ~22 days (≈5–6 weeks) and is visible on ultrasound in the first trimester; fetal heart tones are typically auscultated with a fetoscope around 18–20 weeks (second trimester) though Doppler can detect activity earlier (~10 weeks).
Explanation: cardiac activity begins ~22 days (≈5–6 weeks) and is visible on ultrasound in the first trimester; fetal heart tones are typically auscultated with a fetoscope around 18–20 weeks (second trimester) though Doppler can detect activity earlier (~10 weeks).
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