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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
Draw a diagrammatic sectional view of the female reproductive system of human and label the parts
(i) where the secondary oocytes develop
(ii) which helps in collection of ovum after ovulation
(iii) where fertilization occurs
(iv) where implantation of embryo occurs.
Describe the human female reproductive system with a labelled diagram.
Which part of the human body produces Ova?
Mention the exact location of the following :
Corpus callosum
Give appropriate term of the following:
The rupture of follicle and release of ovum from the ovary.
Give appropriate term of the following:
The monthly discharge of blood and disintegrated uterine tissues in human female.
Name the Following
The structure formed after the release of ovum from the Graffian follicle.
Complete the following sentences with appropriate word:
The female equivalent of the penis is the _______.
State the Location:
Bartholin’s glands.
What is true of gametes?
All are internal genitalia in females. EXCEPT ______.
How many lobes are generally present in each mammary gland?
The development of lactiferous tubules during pregnancy is dependent on ____________.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
When sperm is deposited into the vagina which route does it travel?
Explain how the uterus and placenta provide necessary conditions for proper growth and development of the embryo after implantation?
The vaginal orifice is covered by a fold of membrane called hymen ______.
Given below is a certain situation. Analyze and describe its possible impact on a person:
Placenta does not attach to the uterus optimally.
Describe the female reproductive systems in humans.
