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प्रश्न
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.
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उत्तर
(i)
1. Placenta - It helps irtIe nutrition, excretion and respiration of the embryo.
2. Chorion - It forms the placenta
(ii) The amniotic fluid present in the amniotic cavity acts as a shock absorber and prevents desiccation of embryo.
(iii) The umbilical cord makes the connection between placenta and foetus. It supplies the nutrients and O2 with maternal blood; to a foetus and removes CO2 and excretory wastes from foetus blood into maternal blood. Thus it acts as a transport channel between a foetus and mother blood.
(iv) Placenta - Secrets HCG (Human Chorionic Gonadotropin) hormone.
APPEARS IN
संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
The fluid which surrounds the foetus
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.
Uterus is also known as birth canal.
Differentiate
Amnion and Chorion.
Differentiate
Fetus and Embryo.
Name the Following
A hollow pear-shaped muscular organ that holds, nourishes and protects the fetus.
Name the Following
How the embryo inside the uterus is protected from jerks or mechanical shocks.
Complete the following sentences with appropriate word:
The placenta is ________permeable
How are carbon dioxide and urea, excreted by the foetus, removed?
Does the foetus inside the mother's uterus breathe?
Placenta produces certain hormones.
