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प्रश्न
The below diagram represents the vertical view of the human female reproductive system.
(i) Label the parts indicated by the guidelines 1 to 8.
(ii) How does the uterus prepare for the reception of a zygote?
(iii) What happens to the uterus if fertilization takes place?
(iv) What happens to the uterus if fertilization has failed to take place?
उत्तर
(i)
1. Oviduct
2. Funnel of oviduct
3. Ureter
4. Vagina
5. Ovary
6. Uterus
7. Bladder
8. Urethra
(ii) The endometrium lining and glands of the uterine wall grow to prepare the uterus for the reception of a zygote.
(iii) If fertilization takes place, the embryo is implanted in the uterus. The uterus wall develops a placenta which attaches the embryo to the uterus and the uterine wall expands to accommodate the growing embryo.
(iv) If fertilization fails to take place, menstruation takes place during which endometrium of the uterus is cast off. The capillaries and cells of this layer rupture and disappear.
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संबंधित प्रश्न
Modern techniques like surrogate mother, sperm bank and IVF technique will help the human beings. Justify this statement.
After puberty human female shows cyclic changes in her reproductive system. Explain structural and hormonal changes in the uterus.
(OR)
Give reasons :
(1) Scrotal sac serves as thermoregulator.
(2) Corpus luteum gets converted into corpus albicans in absence of fertilization.
(3) Missing of menses is the first indication of pregnancy.
(4) Surgical sterilization is a permanent method of birth control. (5) Human egg is microlecithal.
Mention the exact location of the following :
Corpus callosum
Name the following:
The part of the female reproductive system in which fertilization occurs.
Write the functional activity of the following structure:
Ovary
What is true of gametes?
Estrogen is secreted by ______
Which of the following is/are included in the external genitalia of the female reproductive system?
What marks the beginning of the reproductive life of a woman?
In human females, an event that reflects onset of reproductive phase is
