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प्रश्न
Why does menstruation occur?
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उत्तर
Menstruation is a process in which blood and mucous flow out every month through the vagina. This process occurs every month because one egg is released from the ovary every month and at the same time, the uterus (womb) prepares itself to receive the fertilised egg. Thus, the inner lining of the uterus gets thickened and is supplied with blood to nourish the embryo. If the egg does not get fertilised, then the lining of the uterus breaks down slowly and gets released in the form of blood and mucous from the vagina. It lasts for three to five days.
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संबंधित प्रश्न
Describe the human female reproductive system with a labelled diagram.
Complete the paragraph with the help of words given in the bracket.
(Luteinizing hormone, endometrium of uterus, follicle stimulating hormone, estrogen, progesterone, corpus luteum)
Growth of follicles present in the ovary occurs under the effect of ______. This follicle secretes estrogen. ______ grows/regenerates under the effect of estrogen. Under the effect of ______, fully grown up follicle bursts, ovulation occurs and ______ is formed from remaining part of follicle. It secrets ______ and ______. Under the effect of these hormones, glands of ______ are activated and it becomes ready for implantation.
Explain the concept of IVF.
The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:
(i) Name the fully developed part of ovary containing the ovum. (ii) Name the organ of the female body in which the foetus develops.
(iii) What is ovulation?
(iv) Which two hormones are secreted by ovary?
Given here is a section of the female reproductive system of human beings.
Name the part where fertilisation occurs in human beings.
Give Technical Term:
Name the connective tissue surrounding the ovary.
What is true of gametes?
Which stage is followed after the secondary follicle stage?
Bartholin’s glands are situated ______.
Which part of ovary in mammals acts as an endocrine gland after ovulation?
In oocyte secondary maturation occurs in ______.
The external genitalia of the human female is called ______.
In the given Figure label the parts and mention their functions
- Production of egg
- Site of fertilisation
- Site of implantation
- Entry of the sperms
In rabbits, humans and other placental mammals, fertilization occurs in ______.
What are the functions of the ovaries and uterus in the female reproductive system?
______ is not a part of the female reproductive system in human beings.
Bartholin's glands are homologous to ______.
The ______ is also called the womb.
Write the specific location of the following:
Uterus
