a temporary organ formed from both fetal and maternal tissues that provides nutrients and oxygen to the developing fetus, carries away fetal metabolic wastes, and produces the hormones of pregnancy is the:



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?

  1. Immunological, barrier, endocrine, respiratory, excretory, nutritive, and nutritional functions.
  2. Simple diffusion (respiratory) provides oxygen and produces CO2 while the umbilical cord delivers nutrients to the fetus (nutritive).
  3. removing waste materials including urea, creatinine, and uric acid from the fetus (excretory).
  4. releasing dietary ingredients and necessary products into the maternal and fetal blood circulations through metabolism.
  5. xenobiotic protection for the fetus (compounds including food additives, drugs, and environmental pollutants).
  6. producing steroid and peptide hormones that support the development and growth of the fetus (endocrine).
  7. protecting the developing child from bacterial infections and maternal illnesses.
  8. All hazardous chemicals less than 500 dalton are protected from transmission by the fetal membrane with the exception of antibodies and antigens (barrier).
  9. produces several enzymes, such as oxytocinase and diamine oxidase (enzymatic).

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