Placenta - Anatomy & Physiology
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The placenta is an apposition of foetal and parental tissue for the purposes of physiological exchange. There is little mixing of maternal and foetal blood, and for most purposes the two can be considered as separate.
Exchange
- Direct transfer of nutrients from the maternal to foetal blood via the placenta.
Simple Diffusion
Facillitated Diffusion
Active Transport
Complex Diffusion
Umbillical Arteries
- Arise from Iliac arteries along with vesicular arteries to the bladder.
- Form the ventral ligament of the bladder in the adult.
- Carry deoxygenated blood from the bladder.
Umbillical Veins
- Join the hepatic portal vein