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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
When and where do chorionic villi appear in humans?
Comment on the role of placenta as an endocrine gland.
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?
Arrange the following hormones in sequence of their secretion in a pregnant woman.
hCG, LH, FSH, Relaxin
Choose the correct options of the following question:
Eyelids in human foetus separate in :
Which of the following hormones is not secreted by human placenta?
Which extra-embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
Which of the following hormones is not a secretory product of human placenta?
Relaxin is the hormone secreted by the placenta.
Mark the odd one.
Which of the following statements are correct with respect to hormones secreted by the placenta?
- The placenta secretes relaxin during the later stage of pregnancy.
- The placenta secretes a high amount of FSH during pregnancy.
- The placenta secretes relaxin during the initial stage of pregnancy.
- The placenta secretes hCG and hPL during pregnancy.
The secondary sexual characters develop in females because:
Placenta is
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?
