Multiple choice

Pick out the correct statement regarding the fetal circulation in human.

  1. The fetal heart rate is about double that of a healthy adult.

  2. All the blood circulating in the umbilical vein enters the right atrium.

  3. The three embryo shunts normally close immediately after birth.

  4. Fetal blood pressure is similar to that of an adult.
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A Correct answer
Explanation

It is true that the fetal heart rate is about double that of a healthy adult. By the starting of the 9th week of pregnancy, the normal embryo heart rate is an average of 175 BPM. At this point it begins a rapid decline to the normal embryo heart rate for the middle of the pregnancy of about 120-180 BPM.

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