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प्रश्न
Give scientific reason.
There is a menopause when women are 45-50 years old.
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उत्तर
- The natural cessation of menstruation that occurs between the age of 45-50 years is known as menopause.
- Menopause occurs as the secretion of hormones controlling the functions of the female reproductive system either stops or becomes irregular.
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संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
Male and female gametes are ______.
______ type of reproduction occurs without fusion of gametes.
Describe the process of oogenesis in human female.
Mammalian egg is ____________.
Draw a labeled sketch of a spermatozoan.
Which of the following is diploid?
______ undergoes 2nd meiotic division during spermatogenesis.
Find out the CORRECT sequence of spermatogenesis.
Select the pair of cells which does not divide further by mitosis.
How many autosomes does a human primary spermatocyte have?
By which process sperms released from the seminiferous tubules?
The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.
Choose the correct one with reference to the above.
Spermiation is the process of the release of sperm from ______.
The head of the epididymis at the head of the testis is called ______.
How many sperms are formed from 4 primary spermatocytes?
Which type of cell division forms spermatids from the secondary spermatocytes?
