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Placenta - Anatomy & Physiology (view source)
Revision as of 11:50, 12 July 2011
, 11:50, 12 July 2011→Formation
* Basal lamina of the endothelium
* Basal lamina of the endothelium
* Endothelium of the fetal placental capillary in the teriary villus
* Endothelium of the fetal placental capillary in the teriary villus
===Placental Blood Supply===
Fetal blood enters the placenta via a pair of umbilical arteries which have numerous branches within the placenta to the chorionic plate. Oxygen and nutrient rich blood returns to the fetus via the umbilical vein. Maternal blood is supplied to the placenta via 80-100 spiral endometrial arteries which allow the blood to flow into intervillous spaces facilitating exchnage. The blood pressure within the spiral arteries is much higher than that found in the intervillous spaces resulting in more efficient nutrient exchange within the placenta.
==Types of Placenta==
==Types of Placenta==