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प्रश्न
What changes occur at the time of birth?
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उत्तर
A cycle of uterine contractions followed by labour pains, dilation of the cervix and the vagina slowly pushes the fetus out of the uterus. The uterine contractions are initiated by decreased progesterone secretion and the secretion of oxytocin hormone by the pituitary gland. After the child's delivery, the placenta is expelled out.
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संबंधित प्रश्न
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 between:
Amnion and allantois
Name and describe very briefly, the stages in the development of human embryo.
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
Give Technical Term:
Name a membrane that surrounds the fetus and secretes a protective fluid.
Write the functional activity of the following structure:
Uterus
The haemoglobin of a human foetus ______.
Name the following:
Two hormones secreted from placenta.
List the substances which the foetus receives from the mother through placenta.
How are carbon dioxide and urea, excreted by the foetus, removed?
