Podcast
Questions and Answers
During the third week of gestation, what is the most characteristic event that occurs?
During the third week of gestation, what is the most characteristic event that occurs?
- Formation of the amniotic cavity
- Differentiation of the trophoblast into two layers
- Establishment of uteroplacental circulation
- Gastrulation (correct)
What is the first indication that a woman may be pregnant?
What is the first indication that a woman may be pregnant?
- Cessation of menstruation (correct)
- Formation of the amniotic cavity
- Differentiation of the trophoblast into two layers
- Establishment of uteroplacental circulation
What does gastrulation establish in embryos?
What does gastrulation establish in embryos?
- The three germ layers (ectoderm, mesoderm, and endoderm) (correct)
- The beginning of uteroplacental circulation
- Differentiation of the trophoblast into two layers
- Formation of the chorionic cavity
At what point can a normal pregnancy be detected with ultrasonography?
At what point can a normal pregnancy be detected with ultrasonography?
What is the name of the cavity formed during the third week of development that will surround the developing embryo?
What is the name of the cavity formed during the third week of development that will surround the developing embryo?
What is the beginning of morphogenesis and formation of the three germ layers in embryos called?
What is the beginning of morphogenesis and formation of the three germ layers in embryos called?
What is the cephalic end of the streak referred to as?
What is the cephalic end of the streak referred to as?
What is the inward movement of cells beneath the epiblast known as?
What is the inward movement of cells beneath the epiblast known as?
Which factor controls the migration and specification of cells during embryonic development?
Which factor controls the migration and specification of cells during embryonic development?
What does the embryonic ectoderm give rise to?
What does the embryonic ectoderm give rise to?
What does the embryonic endoderm give rise to?
What does the embryonic endoderm give rise to?
What does the embryonic mesoderm give rise to?
What does the embryonic mesoderm give rise to?
What covers the yolk sac and amnion?
What covers the yolk sac and amnion?
Where is the prechordal plate located?
Where is the prechordal plate located?
What does the oropharyngeal membrane consist of?
What does the oropharyngeal membrane consist of?
What is the notochord derived from?
What is the notochord derived from?
