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Placenta - Anatomy & Physiology (view source)
Revision as of 11:43, 12 July 2011
, 11:43, 12 July 2011→Formation
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Maternal sinusoids develop from capillaries of the maternal side which anastamose with these trophoblastic lacunae. The differential pressure between the arterial and venous channels that communicate with the lacunae establishes directional flow from the arteries into the veins resulting in a uteroplacental circulation.
Maternal sinusoids develop from capillaries of the maternal side which anastamose with these trophoblastic lacunae. The differential pressure between the arterial and venous channels that communicate with the lacunae establishes directional flow from the arteries into the veins resulting in a uteroplacental circulation.
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Blood begins to circulate through the embryonic and cardiovascular system and therefore into the placenta at approximately 21 days (although there is some variance across species).
==Types of Placenta==
==Types of Placenta==