Embryology and Human Development - Multiple Choice Questions

The branch of biology that studies the development of an organism from fertilization to birth is called

• Anatomy

• Physiology

• Embryology

• Histology

Fertilization in humans normally occurs in the

• Cervix

• Uterine cavity

• Ampulla of the fallopian tube

• Ovary

The process by which a single-celled zygote divides to form multiple smaller cells is called

• Gastrulation

• Cleavage

• Organogenesis

• Fertilization

The outermost layer of the blastocyst that contributes to placenta formation is the

• Trophoblast

• Inner cell mass

• Hypoblast

• Epiblast

Implantation of the blastocyst in the uterus usually occurs on

• Day 1

• Day 3

• Day 6–7

• Day 14

The three germ layers formed during gastrulation are

• Ectoderm, mesoderm, and endoderm

• Chorion, amnion, and yolk sac

• Embryoblast, trophoblast, and cytotrophoblast

• Epiblast, hypoblast, and mesoblast

The embryonic germ layer that gives rise to the nervous system and skin is the

• Mesoderm

• Endoderm

• Ectoderm

• Trophoblast

The notochord plays a key role in

• Heart formation

• Induction of the neural plate

• Limb development

• Digestive system formation

Organogenesis primarily occurs during which period of development?

• First week

• Second week

• Third to eighth week

• Ninth to twelfth week

The embryonic structure that connects the embryo to the placenta is the

• Yolk sac

• Umbilical cord