Stages of Prenatal Development
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Questions and Answers

What is the role of the hormone secreted by the testes in a male fetus during the 3rd month?

  • Triggers the development of eyebrows, eyelashes, and scalp hair
  • Regulates the growth of the cerebral cortex
  • Causes cells to become a penis and scrotum (correct)
  • Initiates the thickening of the skin and production of vernix caseosa

What protects the fetus during its time in the amniotic fluid?

  • Thickened skin
  • Vernix caseosa (correct)
  • Eyebrows, eyelashes, and scalp hair
  • Insulating layer of fat

At what age does a fetus start to have a distinctly baby-like appearance?

  • 5th month
  • 22 weeks (correct)
  • 3rd month
  • 28 weeks

Why do babies born between 22 to 28 weeks have difficulty breathing?

<p>Because their lungs are not yet mature (C)</p> Signup and view all the answers

What is a major factor that affects fetal development while in the womb?

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

Which region of the brain grows significantly during the prenatal period?

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

What is the primary function of a male's vas deferens?

<p>Transport sperm from epididymis to urethra (B)</p> Signup and view all the answers

In the female reproductive system, where does fertilization usually occur?

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

What is the main function of the glands (Prostate and Bulbourethral) in males?

<p>Secretion of the fluid part of semen (B)</p> Signup and view all the answers

What is the function of the scrotum in the male reproductive system?

<p>Temperature regulation and protect testes (D)</p> Signup and view all the answers

Which part of the male reproductive system is responsible for discharging sperm?

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

What is the primary function of ovaries in the female reproductive system?

<p>Produce eggs and hormones (D)</p> Signup and view all the answers

What is the function of the placenta during prenatal development?

<p>Serves as a medium of exchange for nutrients and oxygen (C)</p> Signup and view all the answers

Which layer of the embryo will eventually form the digestive system and lungs?

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

During which stage of prenatal development do body structures and internal organs begin to form?

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

What is the function of the umbilical cord during prenatal development?

<p>Connects the developing child to the mother for nutrient exchange (A)</p> Signup and view all the answers

Which part of prenatal development involves rapid cell division and implantation into the uterine wall?

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

Where does the embryo typically rest during prenatal development, surrounded by amniotic fluid?

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

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