CBSE Class 12-science Answered
The events of the menstrual cycle are represented
below. Answer the following questions.
(i) State the levels of FSH, LH and progesterone
simply by mentioning high or low around 13th and 14th
day and 21st to 23rd day.
(ii) In which of the above mentioned phases does the
egg travel to fallopian tube?
(iii) Why is there no menstruation after
fertilisation?
(i) State the levels of FSH, LH and progesterone
simply by mentioning high or low around 13th and 14th
day and 21st to 23rd day.
(ii) In which of the above mentioned phases does the
egg travel to fallopian tube?
(iii) Why is there no menstruation after
fertilisation?
Asked by Topperlearning User | 11 Jun, 2014, 03:33: PM
Expert Answer
(i)
|
Hormones |
13-14th day |
21st-23rd day |
|
FSH |
High |
Low |
|
LH |
High |
Low |
|
Progesterone |
Low |
High |
(ii) The egg travels to the fallopian tube at the end of follicular or proliferative phase.
(iii) Menstruation does not occur during pregnancy upon fertilisation due to high level of progestenone secreted by the persisting corpus luteum and placenta.
Answered by | 11 Jun, 2014, 05:33: PM
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