Thureen Ch 5 Transition

Question 1

Placenta

Answer 1

Responsible for blood oxygenation and elimination of waste products of metabolism

Question 2

How is O2 and CO2 transferred across the placenta?

Answer 2

through simple diffusion

Question 3

Describe the placentas high rate of metabolism

Answer 3

uses 1/3 of all the O2 and glucose supplied by the maternal circulation for its own metabolic needs.

Question 4

How does the placenta affect fetal cardiac output?

Answer 4

it is a low-resistance circuit; receives approximately 50% of fetal cardiac output.

Question 5

Describe the uterine venous blood

Answer 5

it has a PaO2 of 40-50 mm Hg and a pH of 7.36