Embryology Basics

How long is the embryonic period?

• 8 weeks (2 months)

• 16 weeks (4 months)

• 12 weeks (3 months)

• 1 week

• 4 weeks (1 month)

The embryonic period occurs during a woman's first trimester of pregnancy. How long is a woman's first trimester?

• 8 weeks (2 months)

• 16 weeks (4 months)

• 12 weeks (3 months)

• 1 week

• 4 weeks (1 month)

Developmental processes that make an embryo.

• Embryology

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

Study of developmental events that occur prior to birth

• Embryology

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

Active time during which rudimentary versions of the major organ systems appear in the body from fertilization to Week 8 of pregnancy.

• Embryonic Period

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

Process in which the zygote divides by mitosis to form a multicellular structure called a blastocyst.

• Embryonic Period

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

Process in which the blastocyst cells form three primary germ layers, which are the basic cellular structures from which all body tissues develop.

• Embryonic Period

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

Process in which the three primary germ layers arrange themselves in ways that give rise to all organs in the body.

• Embryonic Period

• Embryogenesis

• Gastrulation

• Organogenesis

• Cleavage

The embryonic periods lays the foundation for all stages of life.

• True

• False

What major changes occur during embryonic development?

• Embryo becomes more complex

• Embryo becomes more larger

• All organ systems begin to develop

• The number of cells present in the embryo decreases.