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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
The exact location of the Amnion
Name the following:
The fluid surrounding the developing embryo
Choose the odd one in each of the following :
Relaxin; cervix dilated; amniotic sac ruptures; child birth; follicle.
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Placenta
- What are the two sources that form placenta?
- Name any two main substances which pass from foetus to mother through placenta.
- Name any two hormones it produces.
Name the following:
The structure which connects the placenta and the foetus.
Give Technical Term:
The part in the uterus which is concerned with the supply of nutrition from the mother to the fetus.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
Write the functional activity of the following structure:
Amnion
All are functions of placenta, EXCEPT ______.
Placenta produces certain hormones.
