CVRP - Fetal and Neonatal Gas Exchange Exam Questions & Answers 2023/2024

CVRP - Fetal and Neonatal Gas Exchange Exam Questions & Answers 2023/2024 In fetal circulation, the blood circulating to the placenta to pick up oxygen is in (parallel/series) to the blood going to the rest of the body. - ANSWER-parallel - O2 rich blood from placenta mixes from O2 poor blood from the rest of the body of the fetus (T/F) Maternal blood gets mixed into fetal circulation. - ANSWER-False. The maternal and fetal blood come into close enough proximity to each other in the placental microcirculation to allow exchange of gases and nutrients, but blood is never exchanged. What supplies the fetal placenta with blood? - ANSWER-two umbilical arteries off the fetal internal iliac What supplies the maternal placenta with blood? - ANSWER-200 endometrial spiral arteries What drains the fetal placenta? - ANSWER-single umbilican vein What drains the maternal placenta? - ANSWER-endometrial veins Where does the exchange of solutes (and gases) occur between maternal and fetal blood? - ANSWER-fetal placental veilli surrounded by a maternal blood reservoir Contrast maternal blood flow (in L/min) and fetal blood flow. - ANSWER-maternal: 1 L/min fetal: 600 mL/min Contrast O2 extraction of placenta and rest of mother's body. - ANSWER-Placenta: venous blood returns with 70% rest of body: venous blood returns with 75%