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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
Give appropriate biological or technical terms for the following :
The fluid which surrounds the foetus
Choose the odd one in each of the following :
Relaxin; cervix dilated; amniotic sac ruptures; child birth; follicle.
Differentiate between:
Impotency and sterility
Explain the term Fetus
Name the Following
The expulsion of the fetus from the body of the mother.
Complete the following sentences with appropriate word:
The period of complete development of the fetus until birth is termed ______.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
Write the functional activity of the following structure:
Amnion
In human beings, the placenta is formed by ______.
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
