Answer :
This organ is called placenta. It forms from both fetal and maternal tissues. It plays different roles during the entire gestation period. It produces certain hormones and also is a part of the neuro-endocrine mechanism. It is very important for the entire pregnancy process.
What are the functions of the human placenta?
- Immunological, barrier, endocrine, respiratory, excretory, nutritive, and nutritional functions.
- Simple diffusion (respiratory) provides oxygen and produces CO2 while the umbilical cord delivers nutrients to the fetus (nutritive).
- removing waste materials including urea, creatinine, and uric acid from the fetus (excretory).
- releasing dietary ingredients and necessary products into the maternal and fetal blood circulations through metabolism.
- xenobiotic protection for the fetus (compounds including food additives, drugs, and environmental pollutants).
- producing steroid and peptide hormones that support the development and growth of the fetus (endocrine).
- protecting the developing child from bacterial infections and maternal illnesses.
- All hazardous chemicals less than 500 dalton are protected from transmission by the fetal membrane with the exception of antibodies and antigens (barrier).
- produces several enzymes, such as oxytocinase and diamine oxidase (enzymatic).
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