Embryology and Reproductive Physiology Quiz

What is the product of fertilisation?

• Morula

• Blastocyst

• Zygote

• Embryoblast

Which structure is directly responsible for implantation into the uterine wall?

• Hypoblast

• Epiblast

• Trophoblast

• Morula

What process transforms the bilaminar disc into three germ layers?

• Neurulation

• Cleavage

• Gastrulation

• Implantation

The neural tube forms from which embryonic layer?

• Endoderm

• Mesoderm

• Ectoderm

• Trophoblast

Failure of complete neural tube closure results in what congenital abnormality?

• Gastroschisis

• Anencephaly

• Omphalocele

• Situs inversus

Which germ layer gives rise to muscle, bone, and the cardiovascular system?

• Ectoderm

• Mesoderm

• Endoderm

• Epiblast

What is the function of embryonic folding?

• Split the embryo into two identical halves

• Form the neural tube

• Transform the flat trilaminar disc into a cylindrical embryo

• Create the primitive streak

The amnion serves mainly to:

• Provide nutrition

• Form body cavities

• Protect and cushion the embryo in fluid

• Initiate fertilisation

Body cavities (thoracic and abdominal) form primarily through:

• Gastrulation

• Folding and splitting of the mesoderm

• Neural crest migration

• Blastulation

Mesenteries function to:

• Connect the gut tube to the posterior body wall

• Form the neural tube

• Produce amniotic fluid

• Guide neural crest migration