Question

11. Read the graph and correlate the uterine events that takes place according to the hormonal levels on A. 6-15 days, B. 16-25 days, C. 26-28 days (if the ovum is not fertilised) Ongon Dyorsan hormonal Progesteron 10 20 25 15 Days A-Degeneration of endometrium B-Myometrium thickness, becomes vascularised ready to receive and implant embryo, C-Regeneration of endometrium A-Degeneration of endometrium, B-Endometrium thickness increases, becomes vascularised, ready to receive and implant ovum, C-Regeneration of endometrium A-Regeneration of endometrium, B-Endometrium becomes thick and vascularised ready to receive and implant embryo, C-Degeneration of endometrium​

Answer 1

Explanation:

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Answer 2

Answer:

• 6-15 days: If the egg is not fertilized then the menstrual cycle continues for another 14-15 days (the secretory phase). This period is usually the same length, regardless of the total length of the woman's menstrual cycle. Levels of estrogen, progesterone, luteinizing hormone and follicle stimulating hormone all decline.

• 16-25 days: The ovulation occur during this phase and the progesterone level rises. 

• 26-28 days:  If the ovum is not fertilized then the progesterone and estrogen level falls which leads to the degeneration of the ovarian wall. Due which mensuration cycle takes place.