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प्रश्न
Describe the functions of placenta
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उत्तर
Placenta:
The placenta allows the diffusion of oxygen and nutrients such as glucose, vitamins and amino acids from mother to foetus.
Similarly, it also allows the diffusion of carbon dioxide, urea and waste products from foetus to mother.
Placenta also acts as an endocrine tissue. It secretes oestrogen and progesterone.
संबंधित प्रश्न
Name the following:
The body part in which the embryo develops.
Give appropriate terms for the following:
Rupture of follicle and release of ovum from the ovary.
Given below are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them.
Gestation
• What is its meaning?
• How long does it normally last?
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
Differentiate
Fetus and Embryo.
Study the diagram given below and then answer the questions that follow:
(i) Name the parts labeled 1 and 2. State the function of each part.
(ii) State any one function of the amniotic fluid.
(iii) What is the role of the umbilical cord in the development of the fetus?
(iv) Name the part in the diagram which is endocrine in nature.
Does the foetus inside the mother's uterus breathe?
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Morula.
- What is this stage?
- Name the stage which comes next to it?
Distinguish between the following pair:
Placenta and umbilical cord
Which nitrogenous waste product is removed from the foetus by the placenta through diffusion into maternal bloodstream?
