Human Growth and Development Final Exam Related

Review Human Growth and Development Final Exam related questions and content

When the blastocyst burrows deep into the uterine lining, __________.

  • A. implantation occurs
  • B. pregnancy does not occur
  • C. it stops growing
  • D. the cells of the zygote first duplicate
Correct Answer: A

Rationale: When the blastocyst burrows deep into the uterine lining, this process is known as implantation. Implantation is a crucial step in the early stages of pregnancy where the blastocyst attaches to the uterine wall in order to receive nourishment and continue developing. Choice B is incorrect because implantation is a necessary step for pregnancy to occur. Choice C is incorrect as implantation marks the beginning of further growth and development. Choice D is incorrect as the duplication of cells occurs during earlier stages of development, not during implantation.