Question

explain the major events that occur in reproductive cycle in human females

Answer 1

From puberty (menarche-onset of the menses) until menopause a woman’s reproductive system undergoes many cyclic changes are related to the changes in the endometrium (inner lining of the uterus), breasts, ovaries, vagina, and hormone secretions.

The cyclic reproductive changes of the human female is marked by menstruation, during which some cells, unclotted blood from ruptured blood vessels, other fluids and the uterine endometrium is released through the cervix and vagina. Each menstrual cycle occurs about every 28 days and lasts 4-5 days. The menstruation occurs 12 to 14 days after an ovum is released from the ovary (ovulation), about once in four weeks. The periodicity of the cycle varies with different individuals. After fertilization, menstruation ceases, and is the first indication of pregnancy.

The menstrual cycle (of 28 days) is generally divided into four phases, with major events occurring in each phase. The 4 phases are:

(1) The menstrual (destructive) phase,

(2) The proliferative (follicular) phase,

(3) The ovulatory phase, and

(4) The secretory (luteal) phase



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Answer 2

ovule from ovary....get fertilised.... zygote formation.... embryo formation....fetus ......