Epithelial Tissue

• During OVULATION, maturing egg called OVUM is released from an OVARIAN FOLLICLE at the surface of the OVARY.
• What part of the uterine tube cover the ovary and guide the ovum into the uterine tube?

  Fimbriae
• FERTILIZATION occurs in which part of the uterine tube?

  Distal Third
• What forms when the SPERM and EGG nuclei unite?

  Zygote
• Morula is ready to enter the UTERINE CAVITY at what days?


  Day 4
• What adheres to the UTERINE MUCOSA (usually high up on the posterior wall) and SINKS within it during implantation?

  Blastocyst
• Embryoblast: inner cell mass
• Trophoblast: outer cell mass
• What type of embryoblast makes up CUBOIDAL CELLS?

  Hypoblast
• What type of embryoblast makes up COLUMNAR CELLS??

  Epiblast
• Hypoblast forms what 2 layers?

  Endoderm and mesoderm
• Epiblast forms what 2 layers?

  Mesoderm and Ectoderm
• What are the 2 types of trophoblast?

  Syncytiotrophoblast and cytotrophoblast.
• What cell mass becomes HOLLOW to form the fluid-filled primitive AMNIOTIC CAVITY?

  Epiblast
• Epiblast becomes hollow to form what?

  fluid-filled primitive amniotic cavity
• What cells form a SIMPLE SQUAMOUS primitive YOLK SAC?

  Hypoblast
• Hypoblast cells form what?

  Simple squamous primitive yolk sac
• What is the formal name for squamous primitive yolk sac?

  Heuser's membrane
• A 2nd wave of what cell migration displaces the primitive yolk sac?

  hypoblast
• Anlages: mesoderm, endoderm, and ectorderm
• Placenta: Cytotrophoblast + syncytiotrophoblast