Question

What is Placenta ?


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Answer 1

Answer:

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Explanation:

The placenta is an organ that develops in your uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The placenta attaches to the wall of your uterus, and your baby's umbilical cord arises from it.

Answer 2

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Placenta :

• It is tissue which acts as a passage between the foetus and uterus of the mother during the period of pregnancy.
• It is about 22 cm in length and appears like disc-shaped.
• It is enriched with the high supply and system of blood vessels.
• The two types of placenta includes chorioallantoic placenta and yolk sac placenta.

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Functions of placenta :

• It initiates large surface area for the movement of oxygen and glucose from the mother's blood to the. embryo during pregnancy.
• It assists in the elimination of unwanted waste materials generated by the embryo by moving it to the mother's blood stream.

Need for using Contraceptives :

• To limit the size of the family
• To leave an appropriate gap between the birth of two child in the family.
• To control the increasing population.
• To prevent the speeding of sexually transmitted diseases.

Secondary sexual characteristics that occurs in the female :

• High-pitched voice of females having high frequency.
• Development of oil glands on the skin, resulting the appearance of pimples.
• Growth of hairs on the body on the body and pubic regions.
• Growth of breast and mammary glands.

Functions of the reproductive harmones :

• They helps in regulating the formation of gametes. ( or sex cells )
• They regulates the proper function and working of sex organs. ( also known as Gonads )
• They leads to formation of sexual characteristics.