Gross Anatomy - Gut Development Exam With complete
solution–Expert Verified | Latest Questions 2025
What organ is shared between a fetus and mother? - Placenta
What is the function of the placenta? - Metabolism, gas and nutrient transport,
protection, fetal excretion clearance, and hormone synthesis
When does the placenta become fully functional? - After ~3-4 weeks
What serve similar functions to the placenta before the placenta is fully developed? -
Umbilical vesicle
What is the umbilical vescicle? - Embryonic supporting structure
Also called yolk sac in reference to other species (not humans)
Serves as kind of early placenta
Site of primordial germ cells and may selectively transfer nutrients to embryo
What structures does the umbilical vesicle give rise to? - Epithelium of trachea, bronchi,
lungs, and alimentary canal
The umbilical vesicle shrinks and gives rise to several folds. What are those folds and
what do they form? - Head fold: foregut
2 Lateral folds: midgut
Tail fold: hindgut
Umbilical vessels attached to the midgut is called ________________ - Omphaloenteric
duct
What do the lateral folds of the umbilical vesicle form? - Intraembryonic coelom
What is the embryonic equivalent to the peritoneal cavity? - Intraembryonic coelom
What gives rise to the epithelium of the primordial gut? - Endoderm of umbilical vescicle
What is happening at 4 weeks gestation with your gut? - Placenta is formed and
functional
Umbilical vesicle present but degenerating
Embryo has folded to form primordial gut
What is primordial gut? - Developing tube that runs from mouth to anus and gives rise to
associated organs
What is the embryo mouth? - Stomodeum
solution–Expert Verified | Latest Questions 2025
What organ is shared between a fetus and mother? - Placenta
What is the function of the placenta? - Metabolism, gas and nutrient transport,
protection, fetal excretion clearance, and hormone synthesis
When does the placenta become fully functional? - After ~3-4 weeks
What serve similar functions to the placenta before the placenta is fully developed? -
Umbilical vesicle
What is the umbilical vescicle? - Embryonic supporting structure
Also called yolk sac in reference to other species (not humans)
Serves as kind of early placenta
Site of primordial germ cells and may selectively transfer nutrients to embryo
What structures does the umbilical vesicle give rise to? - Epithelium of trachea, bronchi,
lungs, and alimentary canal
The umbilical vesicle shrinks and gives rise to several folds. What are those folds and
what do they form? - Head fold: foregut
2 Lateral folds: midgut
Tail fold: hindgut
Umbilical vessels attached to the midgut is called ________________ - Omphaloenteric
duct
What do the lateral folds of the umbilical vesicle form? - Intraembryonic coelom
What is the embryonic equivalent to the peritoneal cavity? - Intraembryonic coelom
What gives rise to the epithelium of the primordial gut? - Endoderm of umbilical vescicle
What is happening at 4 weeks gestation with your gut? - Placenta is formed and
functional
Umbilical vesicle present but degenerating
Embryo has folded to form primordial gut
What is primordial gut? - Developing tube that runs from mouth to anus and gives rise to
associated organs
What is the embryo mouth? - Stomodeum
