Human Reproductive System pdf NCERT Related

Review Human Reproductive System pdf NCERT related questions and content

Regarding respiratory system of fetus

  • A. Respiratory bud starts to appear at the ventral wall of foregut at approximately week 10 of gestation
  • B. There are 4 stages of development of respiratory system
  • C. Development of respiratory tract is not complete until the last week of fetal development.
  • D. Epithelial respiratory is derived from endodermal
Correct Answer: A

Rationale: The correct answer is A because the respiratory bud does indeed start to appear at the ventral wall of the foregut around week 10 of gestation. This marks the beginning of respiratory system development. Choice B is incorrect as there are actually 5 stages of respiratory system development. Choice C is also incorrect as the development of the respiratory tract is not fully complete until after birth, not just in the last week of fetal development. Choice D is incorrect because the epithelial respiratory lining is derived from endoderm, not endodermal.