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Question
Comment on the role of placenta as an endocrine gland.
Solution
Placenta acts as an endocrine gland and produces the human chorionic gonadotropins, human placental lactogen, oestrogen, progesterone and relaxin (later stages of pregnancy). These hormones support foetal growth and help in the maintenance of pregnancy. Hormones like oestrogen, progestogen, cortisol and prolactin are increased several folds in the maternal blood.
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RELATED QUESTIONS
When and where do chorionic villi appear in humans?
Gonads develop from embryonic ______.
Eye lens is formed from ______.
Urine test during pregnancy determines the presence of ______.
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:
hCG is secreted by ______
Draw a diagram showing human foetus within the uterus and label any four, parts in it.
