A_is established between uterine and foetal tissue for the exchange of oxygen, carbon dioxide, wastes, nutrients and other material.
Correct answer: B. Placenta
- A. Umbilical cord
- B. Placenta
- C. Conception
- D. Pregnancy
Explanation
Placenta is a physical connection between maternal uterine wall and foetal tissue. It is source of exchange of material between mother and foetus as well as endocrine role is also performed by it to maintain pregnancy.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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