Embryology Stages Quiz

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Questions and Answers

During which period does embryogenesis occur?

  • Pre-embryonic period
  • Embryonic period (correct)
  • Postnatal period
  • Fetal period

What is the term for the stage when the embryo becomes a fetus?

  • Fetal period (correct)
  • Fertilization
  • Organogenesis
  • Gametogenesis

Where are primordial germ cells first observed during embryonic development?

  • Yolk sac (correct)
  • Fallopian tube
  • Uterus
  • Placenta

Which process uniquely distributes chromosomes among gametes?

<p>Meiosis (A)</p> Signup and view all the answers

What is the characteristic chromosome number found in gametes?

<p>23 single chromosomes (1N) (A)</p> Signup and view all the answers

At what stage does meiosis occur during the production of gametes?

<p>During gametogenesis (D)</p> Signup and view all the answers

Where do primordial germ cells (PGCs) originate from at week 4 of embryonic development?

<p>Endoderm (D)</p> Signup and view all the answers

What do primordial germ cells (PGCs) give birth to in the future gonads, leading to the formation of tissues that will feed and control sexual cell development?

<p>Primordial sex cords (B)</p> Signup and view all the answers

What is the term for the cells called when primordial germ cells migrate to the gonadal ridge?

<p>Ovogonia (B)</p> Signup and view all the answers

What is the process of sperm production from primordial germ cells (PGCs) called?

<p>Spermatogenesis (C)</p> Signup and view all the answers

What do Sertoli cells in the seminiferous tubules help regulate?

<p>Spermatogenesis (C)</p> Signup and view all the answers

What is the term for the cells that progress from primary spermatocytes to secondary spermatocytes to spermatids to sperm?

<p>Gamete (B)</p> Signup and view all the answers

What stimulates spermatogenesis by binding to FSH and androgen receptors in Sertoli cells?

<p>Testosterone (D)</p> Signup and view all the answers

Where does spermatogenesis take place?

<p>Testes (B)</p> Signup and view all the answers

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