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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?
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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.
संबंधित प्रश्न
Draw a labelled diagram of the female reproductive system.
Differentiate between Identical twins and fraternal twins.
The diagram given below represents a system in the human body. Study the diagram and answer the following questions:
- Identify the system.
- Label the parts marked 5 and 6.
- Name the two hormones secreted by 1.
- Mention the number and the name of the part involved in fertilization and implantation from the above diagram.
- Mention the surgical methods of contraception in:
- Human males.
- Human females.
Why is zona pellucid retained around the egg till it reaches the uterus?
Give Technical Term:
What term is used for the arrest of reproductive capacity in females?
Match the parts of the given figure with the correct option.
| 1 | 2 | 3 | 4 | 5 | |
| a. | Fallopian tube | Oviduct | Uterus | Cervix | Vagina |
| b. | Oviduct | Cervix | Vagina | Ovary | Vas deferens |
| c. | Ovary | Oviduct | Uterus | Vagina | Cervix |
| d. | Fallopian tube | Ovary | Cervix | Uterus | Vagina |
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
Which structure in the ovary will remain functional in subject 2?
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
For subject 2 it is observed that the peak for hormone B has reached the plateau stage. After approximately how much time will the curve for hormone B descend?
Read the following and answer from given below:
During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.
Select the correct sequence of various physical and chemical events that take place during fertilisation.
P. Fusion of cortical granules with the plasma membrane of secondary oocyte.
Q. Formation of fertilization cone to receive sperm.
R. Release of sperm lysin from acrosome.
S. Mixing up of chromosomes of a sperm and an ovum.
What are various ways to avoid pregnancy? Elaborate any one method.
