Fetal Circulation and Placenta Flashcards
(31 cards)
Fetal Circulation from most oxygenated to most deoxygenated
Placenta –> umbilical vein –> ductus venousus –> inferior vena cava –> heart/ right atrium (patent foramen ovale to left A to left V OR right V to pulmonary A to ductus arteriosus) –> aorta –> hypogastric arteries (or internal iliac a to umbilical a) –> placenta
How does oxygen cross the placenta?
Simple diffusion
How do amino acids cross the placenta?
Active transport
How does glucose cross the placenta?
Facilitated diffusion
How does IgG cross the placenta?
Endocytosis
How does water cross the placenta?
Bulk flow
How does iodine cross the placenta?
Carrier mediated
How does CO2 cross the placenta?
Simple diffusion
How does calcium cross the placenta?
Active transport
How does sucrose cross the placenta?
Facilitated diffusion
How do electrolytes cross the placenta?
Simple diffusion
How does phosphorus cross the placenta?
Active transport
How does fructose cross the placenta?
Facilitated diffusion
How do ketones cross the placenta?
Simple diffusion
How does iron cross the placenta?
Active transport
Does PTU cross the placenta?
Yes
Does Tyrosine cross the placenta?
No
Does TRH cross the placenta?
Yes
Does Triiodothyronine cross the placenta?
No
Does Iodine cross the placenta?
Yes
Does Insulin cross the placenta?
No
Does MgSo4 cross the placenta?
Yes
Does Heparin cross the placenta?
No
Does TSH cross the placenta?
No
