Embryonic Development: Blastocyst Formation

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Questions and Answers

What structure forms the inner cell mass of the blastocyst?

  • Oocyte membrane
  • Compacted cells (correct)
  • Trophoblast
  • Corpus luteum

Which hormone is primarily responsible for the rebuilding of endometrial layers during the menstrual cycle?

  • Estrogen (correct)
  • GnRH
  • FSH
  • LH

During which phase of the ovarian cycle does the blastocyst typically implant in the endometrium?

  • Secretory phase (correct)
  • Follicular phase
  • Luteal phase
  • Ovulatory phase

What is the function of the outer cell mass of the blastocyst?

<p>Develops into the trophoblast (D)</p> Signup and view all the answers

Which phase of the uterine cycle is characterized by the shedding of spongy and compact endometrial layers if fertilization does not occur?

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

When does the cavity start to appear in the developing blastocyst?

<p>Upon entering the uterus (D)</p> Signup and view all the answers

Where does fertilization typically occur in the female reproductive system?

<p>Ampullary region of the uterine tube (A)</p> Signup and view all the answers

What happens to luteal cells in the corpus luteum of pregnancy by the end of the fourth month?

<p>They regress slowly (D)</p> Signup and view all the answers

What is the consequence of removing the corpus luteum of pregnancy before the fourth month?

<p>It usually leads to abortion (A)</p> Signup and view all the answers

What part of the female reproductive tract has muscular contractions to facilitate the movement of sperm?

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

At which stage does sperm become less motile during their journey in the female reproductive tract?

<p>After reaching the isthmus (B)</p> Signup and view all the answers

What hormone is primarily responsible for stimulating the ovarian follicle to produce estrogen and promote follicle growth?

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

What triggers the motility of sperm to increase when they reach the ampulla?

<p>Chemoattractants produced by cumulus cells surrounding the egg (C)</p> Signup and view all the answers

During which phase of the ovarian cycle does the formation of the corpus luteum occur?

<p>Progestational or secretory phase (B)</p> Signup and view all the answers

What is the process by which a fertilized oocyte divides into genetically unique cells?

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

Which hormone is responsible for triggering ovulation and promoting the rupture of the mature follicle?

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

Which layer of the endometrium develops between the openings of the glands during implantation?

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

Which hormone is responsible for stimulating the production of gonadotropins (FSH and LH) by the pituitary gland?

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

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