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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.
Eye lens is formed from ______.
Urine test during pregnancy determines the presence of ______.
Except endocrine function, what are the other functions of placenta.
Assertion: Functional ADA cDNA genes must be inserted in the lymphocytes at the early embryonic stage.
Reason: Cells in the embryonic stage are mortal, differentiated and easy to manipulate.
Name the type of antibody that can be transferred through the placenta.
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:
Through which structure is the placenta connected to the embryo, containing blood vessels for substance transport?
Which maternal hormones increase several-fold during pregnancy to support fetal growth and metabolic changes?
