30 Questions
Which of the following is a phase in the development of the primitive uteroplacental circulation?
Extraembryonic Mesoderm Formation
Which cellular contributions are involved in the formation of the bilaminar embryonic disc?
Embryonic Mesoderm
What is the process of gastrulation?
Formation of the Primitive Streak
How does the primordial cardiovascular system develop?
Blood Islands and Heart Formation
Which process marks the beginning of morphogenesis in the embryonic disc?
Gastrulation
During gastrulation, which germ layers are generated?
Ectoderm, mesoderm, and endoderm
What is the precursor to the notochord?
Notochordal process
What is the process involved in the formation of the neural plate and neural tube?
Neurulation
Which structure marks the cranial end of the embryo?
Prechordal plate
What is the function of human chorionic gonadotropin (hCG) in pregnancy?
Stimulates progesterone by the corpus luteum
What can high levels of hCG indicate during pregnancy?
Multiple pregnancies
What is a hydatidiform mole?
A fluid-filled sac or mass of tissue that has no viable embryo
During embryonic development, which tissue gives rise to most of the cardiovascular system, including the heart?
Splanchnic mesoderm
During embryonic development, what is the name of the tissue formed by the splanchnic mesoderm and the underlying endoderm?
Splanchnopleure
What is the process of formation of blood vessels de novo from hemangioblasts called?
Vasculogenesis
What is the process of formation of new blood vessels from pre-existing vasculature called?
Angiogenesis
Which of the following is responsible for bringing together the paired heart tubes to form the single heart tube in its final orientation?
Folding in the sagittal plane
Which of the following contributes cells that form most of the outflow tract and right ventricle in heart formation?
Secondary heart field
At approximately what day do blood islands begin forming?
Day 17
When are blood cells made by the embryo?
Weeks 5-6
What is the primary heart field also known as?
Cardiogenic plate
What is the primary heart field responsible for forming?
Left ventricle
Which structure gives rise to the CNS - the brain and spinal cord?
Neural plate
What is the process involved in the formation of the neural plate and neural folds and closure of these folds to form the neural tube?
Neurulation
What structure forms the ganglia, Schwann cells, enteric nervous system, chromaffin cells, parafollicular C cells, and melanocytes?
Neural crest cells
What does the paraxial mesoderm differentiate into during development?
Dermatome, myotome, and sclerotome
Which of the following is true about the different cell lineages in the developing mammalian embryo?
The endoderm differentiates into mesoderm
What are the two layers that the embryoblast differentiates into during the second week of development?
Epiblast and hypoblast
What is the function of human chorionic gonadotropin (hCG) produced by the syncytiotrophoblast?
Maintains the activity of the corpus luteum
What is the source of the extraembryonic mesoderm that surrounds the amnion and yolk sac?
Primitive streak
Test your knowledge on embryonic development with this quiz! Learn about the splanchnic mesoderm and endoderm, which form the gut wall and give rise to the cardiovascular system. Explore the different layers of mesoderm and their roles in embryonic development.
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