Anatomy and Physiology of Pregnancy Related

Review Anatomy and Physiology of Pregnancy related questions and content

What is the physiologic reason for vascular volume increasing by 40% to 60% during pregnancy?

  • A. Prevents maternal and fetal dehydration
  • B. Eliminates metabolic wastes of the mother
  • C. Provides adequate perfusion of the placenta
  • D. Compensates for decreased renal plasma flow
Correct Answer: C

Rationale: The correct answer is C: Provides adequate perfusion of the placenta. During pregnancy, the increased vascular volume ensures sufficient blood flow to the placenta, supplying oxygen and nutrients to the developing fetus. This is crucial for fetal growth and development. The other choices are incorrect because:
A: Preventing maternal and fetal dehydration is not the main reason for the significant increase in vascular volume during pregnancy.
B: Eliminating metabolic wastes of the mother does not require such a substantial increase in vascular volume.
D: Compensating for decreased renal plasma flow is not the primary physiologic reason for the vascular volume expansion during pregnancy.