alleryStart learning →Around which week do fetal breathing movements begin?
AAround week 13
BAround week 20
CAround week 28
DAround week 36
Answer & Solution
Correct answer: B. Around week 20
1. Fetal breathing movements start well before the lungs are ready to work.
2. They begin around week 20 of development.
3. Week 28 is the milestone for breathing unaided after premature birth, not for these movements.
4. So the second option is correct.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.7 Embryonic Development of the Respiratory System_
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