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प्रश्न
When and where do chorionic villi appear in humans?
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उत्तर
Chorionic villi are finger-like projections that arise from the trophoblast layer that develops in the zygote after it has undergone implantation.
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संबंधित प्रश्न
State the Function of Chorionic Villi
Medically it is advised to all young mothers that breast-feeding is the best for their newborn babies. Do you agree? Give reasons in support of your answer.
Choose the correct options of the following question:
Eyelids in human foetus separate in :
Urine test during pregnancy determines the presence of ______.
Read the following and answer from given below:
Cleavage is the series of rapid mitotic divisions in the zygote and forms blastula. The 2, 4, 8, 16 daughter cells are called blastomeres. An embryo with 64 blastomeres is known as a blastocyst and has a blastocoel cavity. Blastocyst gets implanted in the uterine wall and leads to pregnancy.
The correct sequence of various structures formed during embryonic development is ______
Name the type of antibody that can be transferred through the placenta.
The diagram given below represents a specific stage of human embryonic development. Identify the stage.
Assertion A: Breast-feeding during initial period of infant growth is recommended by doctors for bringing a healthy baby.
Reason R: Colostrum contains several antibodies absolutely essential to develop resistance for the new born baby.
In the light of the above statements, choose the most appropriate answer from the options given below:
Which structure is formed after implantation of the blastocyst and connects the fetus to the uterine wall?
What is the name of the process by which the blastocyst becomes embedded in the endometrium?
