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Question
Describe the functions of placenta
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Solution
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.
RELATED QUESTIONS
The exact location of the Amnion
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The protective sac which develops around the developing embryo is called the Pericardium.
The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow:
- Name the parts '1' to '5' indicated by guidelines.
- What term is given to the period of development of the foetus in the womb?
- How many days does the foetus take to be fully developed?
- Mention two functions of the parts labelled ‘2’ other than its endocrine function.
- Name the hormone (anyone) produced by the part labelled ‘2’.
- What is the function of the part marked ‘3’?
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.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
Write the functional activity of the following structure:
Amnion
The haemoglobin of a human foetus ______.
List the substances which the foetus receives from the mother through placenta.
Amniotic fluid serves to provide oxygen to the foetus.
Distinguish between the following pair:
Placenta and umbilical cord
