CH 4: Implantation, gestation and the role of the placenta
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Questions and Answers

Where does fertilization typically occur?

  • In the cervix
  • In the ovary
  • In the fallopian tube (correct)
  • In the uterus

What is the structure that forms when the zygote divides by mitosis?

  • Embryo
  • Endometrium
  • Morula (correct)
  • Blastocyst

What is the process where the embryo embeds itself into the endometrium called?

  • Fertilization
  • Ovulation
  • Gestation
  • Implantation (correct)

What do the villi develop from after implantation?

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

How many umbilical arteries carry deoxygenated blood from the embryo to the placenta?

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

What is the total number of chromosomes in a zygote after the fusion of the egg cell and sperm cell?

<p>46 (D)</p> Signup and view all the answers

During which stage does the zygote first divide by mitosis?

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

Where does implantation of the embryo take place?

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

What is the outer membrane from which villi develop known as?

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

Which structure connects the placenta to the embryo?

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

What type of blood does the umbilical vein carry from the placenta to the embryo?

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

Which stage marks the formation of finger-like structures called villi from the chorion?

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

What is the first structure formed after fertilization in human development?

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

Which structure in human development is responsible for transporting nutrients and waste between mother and embryo?

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

At what stage does the embryo embed itself into the endometrium of the uterus?

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

What is the role of the umbilical arteries in the placental development process?

<p>Transporting deoxygenated blood from the embryo to the placenta (A)</p> Signup and view all the answers

What happens during ovulation in the female reproductive system?

<p>Bursting of a mature Graafian follicle and release of an egg cell (C)</p> Signup and view all the answers

What is the significance of the blastocyst stage in fetal development?

<p>Development into an embryo as it moves towards the uterus (C)</p> Signup and view all the answers

During which stage does the embryo embed itself into the endometrium?

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

What occurs during fertilization in human reproduction?

<p>Fusion of an egg cell and a sperm cell to form a zygote (D)</p> Signup and view all the answers

Why is implantation crucial for successful pregnancy?

<p>It establishes a connection between embryo and placenta. (D)</p> Signup and view all the answers

What is a significant outcome of zygote division by mitosis?

<p>Doubling of chromosome number in cells. (C)</p> Signup and view all the answers

What is the main function of the umbilical vein in the placental system?

<p>Transporting nutrients and waste between the mother and the embryo (C)</p> Signup and view all the answers

What is the significance of the chorion in human development?

<p>Developing into finger-like villi for placental formation (C)</p> Signup and view all the answers

Which stage in human development involves the formation of both a morula and a blastocyst?

<p>Development of the Zygote (B)</p> Signup and view all the answers

What happens in the fallopian tube during early human development?

<p>Fertilization of the egg cell by the sperm cell (B)</p> Signup and view all the answers

What role does mitosis play in the development of a zygote?

<p>Divides the zygote into a morula and then a blastocyst (A)</p> Signup and view all the answers

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