Podcast
Questions and Answers
Which one of the following is a correct statement about foetal circulation?
Which blood vessel carries oxygen- and nutrient-rich blood from the placenta to the foetus?
What happens to the foramen ovale after birth?
What is the consequence of a patent foramen ovale (PFO)?
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What causes the closure of the ductus arteriosus after birth?
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What happens to the umbilical vein after birth?
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Which process is responsible for turning the bilaminar disc into a trilaminar disc?
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What is the name of the cavity within the blastocyst?
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Which germ layer forms the neural plate?
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What is the name of the structure that grows from the primitive pit and induces changes in the overlying ectoderm?
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Which part of the mesoderm will differentiate into somites?
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What is the name of the process by which cells move through the primitive streak during gastrulation?
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Which part of the blastocyst contains the inner cell mass?
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What is the name of the structure that appears on day 14 and marks the beginning of gastrulation?
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Which one of the following statements about fetal circulation is correct?
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Which one of the following statements about the circulation of blood in the fetus and placenta is correct?
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Which one of the following statements about the foramen ovale, ductus arteriosus, and ductus venosus is correct?
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Which one of the following statements about the changes in the circulation of blood in the fetus at the time of birth is correct?
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Which one of the following statements about the consequences of non-closure of foramen ovale and ductus arteriosus is correct?
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Which one of the following statements about the development of trilaminar disc, the 3 germ layers (ecto, endo and mesoderm), and folding is correct?
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Study Notes
Foetal Circulation
- The umbilical vein carries oxygen- and nutrient-rich blood from the placenta to the foetus.
- The foramen ovale closes after birth, and failure to close results in a patent foramen ovale (PFO).
- A PFO can cause oxygenated blood from the left atrium to flow back to the right atrium, leading to hypoxia.
- The ductus arteriosus closes after birth due to increased oxygen levels.
Embryonic Development
- The process of gastrulation turns the bilaminar disc into a trilaminar disc.
- The cavity within the blastocyst is called the blastocoel.
- The neural plate is formed from the ectoderm germ layer.
- The primitive streak grows from the primitive pit and induces changes in the overlying ectoderm.
- The mesoderm will differentiate into somites.
- During gastrulation, cells move through the primitive streak through a process called ingression.
- The blastocyst contains the inner cell mass in the embryoblast.
- The primitive streak appears on day 14 and marks the beginning of gastrulation.
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Description
Test your knowledge on fetal circulation and the functions of key structures such as the foramen ovale and ductus arteriosus. This quiz will assess your understanding of how blood circulates through the fetal heart and the overall circulation in the fetus and placenta.