alleryStart learning →In which week of gestation does development of the respiratory system begin?
AAbout week 4
BAbout week 8
CAbout week 16
DAbout week 20
Answer & Solution
Correct answer: A. About week 4
1. Respiratory development starts early and continues into childhood.
2. It begins at about week 4 of gestation.
3. So the first option is correct.
4. Week 16 is when the major airway structures are complete, which is a later milestone rather than the start.
_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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