18 Questions
What structure forms the inner cell mass of the blastocyst?
Compacted cells
Which hormone is primarily responsible for the rebuilding of endometrial layers during the menstrual cycle?
Estrogen
During which phase of the ovarian cycle does the blastocyst typically implant in the endometrium?
Secretory phase
What is the function of the outer cell mass of the blastocyst?
Develops into the trophoblast
Which phase of the uterine cycle is characterized by the shedding of spongy and compact endometrial layers if fertilization does not occur?
Menstrual phase
When does the cavity start to appear in the developing blastocyst?
Upon entering the uterus
Where does fertilization typically occur in the female reproductive system?
Ampullary region of the uterine tube
What happens to luteal cells in the corpus luteum of pregnancy by the end of the fourth month?
They regress slowly
What is the consequence of removing the corpus luteum of pregnancy before the fourth month?
It usually leads to abortion
What part of the female reproductive tract has muscular contractions to facilitate the movement of sperm?
Uterus
At which stage does sperm become less motile during their journey in the female reproductive tract?
After reaching the isthmus
What hormone is primarily responsible for stimulating the ovarian follicle to produce estrogen and promote follicle growth?
FSH
What triggers the motility of sperm to increase when they reach the ampulla?
Chemoattractants produced by cumulus cells surrounding the egg
During which phase of the ovarian cycle does the formation of the corpus luteum occur?
Progestational or secretory phase
What is the process by which a fertilized oocyte divides into genetically unique cells?
Meiosis
Which hormone is responsible for triggering ovulation and promoting the rupture of the mature follicle?
LH
Which layer of the endometrium develops between the openings of the glands during implantation?
Spongy layer
Which hormone is responsible for stimulating the production of gonadotropins (FSH and LH) by the pituitary gland?
GnRH
Test your knowledge on the early stages of embryonic development, specifically focusing on the formation of the blastocyst and the implantation process in the uterus.
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