Functions of placenta

respiratory function
nutritive function
immunological function
endocrine function
endocrine function

1. FUNCTIONS OF PLACENTA SHARON TREESA ANTONY FIRST YEAR M.SC NURSING GOVT. COLLEGE OF NURSING KOTTAYAM

2. RESPIRATORY FUNCTION By simple diffusion With the aid of partial pressure gradient O2 supply is at a rate of 8ml/kg/min

3. NUTRITIVE FUNCTION GLUCOSE : by facilitated diffusion (GLUT 1) LIPIDS: direct transport AMINO ACIDS: active transport ( ATPase ) Water & electrolytes Na, K, Cl -: simple diffusion Ca, P, Fe: active transport Water soluble vitamins: active transport Fat soluble vitamins: transferred slowly

4. ENZYMATIC FUNCTION Diamine oxidase : inactivates pressors Oxytocinase :inactivates oxytocin Phospholipase A: PG production

5. EXCRETORY FUNCTION Urea, uric acid, creatinine : simple diffusion Anabolic

6. BARRIER FUNCTION Placental membrane acts as a barrier for noxious substances

7. IMMUNOLOGICAL FUNCTION Foetus is not rejected by the maternal body Placental hormones Pregnancy associated plasma protein A Human chorionic gonadotropin

8. ENDOCRINE FUNCTION Protein Hormones Human chorionic gonadotropin Human placental Lactogen Pregnancy Specific beta 1 glycoprotein Growth Factors Pregnancy associated plasma protein A

9. Steroid Hormones Estrogen Progesterone

10. OTHER FUNCTIONS Temperature Maintenance

11. IN A NUTSHELL S- Storage E- Endocrine R- Respiratory P - Protection E- Excretion N- Nutrition T- Transfer

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