Embryology Quiz

The layer that gives rise to the skin epidermis is:

• Endoderm

• Ectoderm

• Mesoderm

• Epiblast

Which week marks the beginning of the fetal period?

• 6th

• 8th

• 9th

• 12th

The lacunar networks are formed by the fusion of:

• Sinusoids

• Chorion

• Trophoblast

• Blastomeres

The hormone that stimulates milk secretion and protein synthesis is:

• hCG

• hCS

• Relaxin

• CRH

The embryoblast is responsible for forming the:

• Placenta

• Uterine lining

• Embryo

• Yolk sac

Corticotropin-releasing hormone is involved in:

• Maintaining uterine lining

• Stimulating ovulation

• Timing of birth

• Initiating cleavage

The term “zygote” refers to:

• A fertilized egg

• A 2-cell embryo

• A blastocyst

• An implanted egg

What is the function of Wharton’s jelly?

• Hormone secretion

• Nutrient absorption

• Protection in umbilical cord

• Placental attachment

Which hormone increases flexibility of the pubic symphysis?

• hCS

• Relaxin

• Progesterone

• Estrogen

The neural plate forms from:

• Mesoderm

• Endoderm

• Ectoderm

• Chorion