In menstrual phase, the production of LH considerably |
|||||||
a) |
Reduced |
b) |
Increases |
c) |
Does not change |
d) |
None of these |
In menstrual phase, the production of LH considerably |
|||||||
a) |
Reduced |
b) |
Increases |
c) |
Does not change |
d) |
None of these |
(a)
In menstrual phase, the production of LH and progesterone decreases.
Menstrual cycle
Phases |
Days |
Events |
Menstrual phase |
1-5 |
Endometrium breaks down, menstruation begins. The cells of endometrium, secretions, blood and the unfertilized ovum constitute the menstrual flow. Progesterone and LH production is reduced |
Follicular phase (proliferative phase) |
6-13 |
Endometrium rebuilds, FSH secretion and oestrogen’s secretion increase |
Ovulatory phase |
14 |
Both LH and FSH attain a peak level. Concentration of oestrogen in the blood is also high and reaches its peak, Ovulation occurs |
Luteal phase (secretory phase) |
15-28 |
Corpus luteum secretes progesterone. Endometrium thickens and uterine glands become secretory |