Q. Progesterone, ovulation, 28 days, puberty, menarche, 45-50 years, menopause, fallopian tube, 13th or 14th days
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Fill in the blanks using the given words.
Menstrual cycle is a series of cyclic changes that occur in the reproductive system of human females with a periodicity of about ..........(1) ...........
The cycle begins with ..........(2)...........
The first menstruation is called as ..........(3) ...........
It stops between age of .........(4) ............
Stoppage of menstruation permanently is called as ........(5) .............
At about the middle of the menstrual cycle on .........( ) ..........., the growing follicle bursts and mature ovum is released from the ovary under the influence of higher levels of estrogen and LH.
The phenomenon is called as .........(7)..............
The empty follicle grows into corpus luteum that secretes hormone ........... (8) ..........
The released ovum is drawn into ..................(9) ...................... with the help of inward lashing movements of its internal cilia.
It rests for 1-2 days in the ampulla.
The period is called as fertility period.
Pregnancy can occur only during this phase.