After puberty human female shows cyclic changes in her
reproductive system. Explain structural and hormonal changes
in the uterus.
Answers
Answer:
generally after puberty in females breast size increases mensuration start occur
Explanation:
the uterus remove one egg ever 28days in this the blood,mucus,the lineing of uterus and unfertilized egg release this take 2-3days this occur if the egg is not fertilised if it fertilised egg is implanted in uterus and forms zygote thus to a baby
Answer:
After puberty, women start showing cyclical changes in uterus (reproductive changes) due to cyclical changes of pituitary and ovarian hormones.
This cycle is called Menstrual Cycle.
It has following 4 stages:
- Menstrual phase
- Proliferative phase
- Ovulation phase
- Secretory phase
Menstrual phase :
It is the bleeding phase due to sudden withdrawal of ovarian hormones (Progesterone) due to regression of Corpus Luteum.
Proliferative phase:
It is the phase when the uterine endometrial lining proliferates itself. The endometrial cells undergo hyperplasia due to secretion of Estrogen .
Ovulation:
In this phase, due to increase of Lutenising Hormone, the ovum is released from the ovary.
Secretory phase:
In this phase , the endometrial lining prepares itself to receive the zygote. The endometrial lining in this phase is maintained by progesterone.
If fertilisation doesn't occur, it again goes into menstrual phase.