Which of the following events are a part of a menstrual cycle?
i. The pituitary gland stimulates the ovaries to produce oestrogen and progesterone
ii. Ovulation takes place
iii. Oestrogen stimulates the uterus to build up extra tissue and blood layer to make the wall nutritious for a zygote
iv. In the absence of fertilisation, the egg is eliminated from the body along with the uterus lining which comes out as blood discharge at the time of menstruation
Which of the following events are a part of a menstrual cycle?
i. The pituitary gland stimulates the ovaries to produce oestrogen and progesterone
ii. Ovulation takes place
iii. Oestrogen stimulates the uterus to build up extra tissue and blood layer to make the wall nutritious for a zygote
iv. In the absence of fertilisation, the egg is eliminated from the body along with the uterus lining which comes out as blood discharge at the time of menstruation
The correct option is D i, ii, iii and iv
The ovaries in females release one egg alternately every month which is stimulated by the release of FSH and LH from the pituitary gland. The oestrogen, secreted by the ovary also builds up a lining of blood in the inner wall of the uterus which prepares the uterus for pregnancy. In case of absence of fertilization, the body gets rid of the egg along with the inner lining of the uterus which comes out as menstrual blood. The cycle occurs once every 28-30 days and is called as menstrual cycle.
i, ii, iii and iv
The ovaries in females release one egg alternately every month which is stimulated by the release of FSH and LH from the pituitary gland. The oestrogen, secreted by the ovary also builds up a lining of blood in the inner wall of the uterus which prepares the uterus for pregnancy. In case of absence of fertilization, the body gets rid of the egg along with the inner lining of the uterus which comes out as menstrual blood. The cycle occurs once every 28-30 days and is called as menstrual cycle.
