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प्रश्न
Except endocrine function, what are the other functions of placenta.
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उत्तर
Placenta facilitates the supply of oxygen and nutrients to the embryo. It also removes CO2 and excretory wastes produced by embryo.
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संबंधित प्रश्न
During the reproductive cycle of a human female, when, where and how does a placenta develop? What is the function of placenta during pregnancy and embryo development?
Explain Rh factor incompatibility during pregnancy.
Gonads develop from embryonic ______.
Eye lens is formed from ______.
Which extra-embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
Which of the following hormones is not a secretory product of human placenta?
In the development of the human body, the ectoderm is responsible for the formation of ______.
Which of the following is not a function of the placenta?
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.
At which stage of embryonic development does trophectoderm develop?
Several hormones like HCG, HPL estrogen, and progesterone are produced by ______.
Explain the formation of placenta after the implantation in a human female.
Draw a diagram showing human foetus within the uterus and label any four, parts in it.
Name the type of antibody that can be transferred through the placenta.
The diagram given below shows the early embryonic stages of fish, reptiles, birds and humans. Though adult reptiles, birds and mammals breathe air, their embryos possess gills. How does this fact support evolution?
