How is human placenta adapted for exchange of materials between the mother and foetus?

• Rich blood supply allow absorbs necessary nutrients and deliver waste products to mother’s drug
• Has villi that that increases surface area for exchange of material
• Placental blood has high affinity for oxygen
• Thin membrane reduce diffusion distance
• Blood capillaries of the fetus and mother flow in opposite direction (counter current system) to maintain diffusion gradient.
• Contain numerous mitochondria to provide energy for active transport.

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Dr. Bbosa Science