Questions and Answers
1. If fetal arterial pressure begins to fall below normal levels
ANS A. BARORECEPTORS CAUSE VASOCONSTRICTION AND INCREASE THE FHR
An increase in arterial blood pressure produces vessel distension and causes arterial baroreceptors to send neuronal messages to the
cardioinhibitory center, which in turn causes rapid slowing of the fetal heart rate via the parasympathetic vagus nerve. A decrease in
arterial pressure results in an increased heart rate.
Source; https://perigen.com/what-regulates-fetal-heart-rate/
2. Which of the following is an extrinsic influence on the FHR?
ANS Fetal-placental circulation
3. Fetal heart rate vaiability is definded as fluctuations in the baseline that are
irregular in
ANS AMPLITUDE and FREQUENCY
4. The most highly oxygenated blood in fetal circulation is carried by
ANS Ductus venosus
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