Functions of the Placenta; Nutrient Supply, Respiratory Exchange, Waste Removal, Hormone Production

Описание: Placenta: The Lifeline Between Mother and Baby

The placenta is a temporary yet vital organ that forms during pregnancy, acting as the interface between the mother and the developing fetus. It’s not just a passive conduit—it’s a multitasking powerhouse!

🌬️ 1. Gas Exchange
Transfers oxygen from maternal blood to the fetus

Removes carbon dioxide from fetal blood to the mother

🍽️ 2. Nutrient Supply
Delivers essential nutrients like glucose, amino acids, fatty acids, and vitamins to the fetus

Stores energy sources like glycogen and fat for fetal use

🚮 3. Waste Removal
Filters out fetal metabolic waste (e.g., urea, creatinine)

Transfers waste to maternal circulation for disposal

🛡️ 4. Immune Protection
Passes maternal antibodies (especially IgG) to the fetus

Offers passive immunity for the first few months after birth

🧪 5. Hormone Production
Secretes key pregnancy hormones:

hCG: Maintains corpus luteum

Estrogen & Progesterone: Support uterine lining and fetal development

Human Placental Lactogen (hPL): Modulates maternal metabolism

🧱 6. Barrier Function
Acts as a selective filter—blocks many harmful substances

But some toxins (e.g., nicotine, alcohol, certain drugs) and pathogens can cross

🧠 7. Developmental Support
Facilitates fetal organ development by regulating growth factors

Functions as the fetus’s lungs, kidneys, and liver until birth



#Placenta