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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Discuss the mode of action and advantages/disadvantages of hormonal contraceptives.

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प्रश्न

Discuss the mode of action and advantages/disadvantages of hormonal contraceptives.

दीर्घउत्तर
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उत्तर

  • Oral administration of small doses of either progestagens or progestogen-estrogen combinations is another contraceptive method used by the females.
  • Most important component of oral contraceptive is progesterone. They are used in the form of tablets and hence are popularly called the pills. Pills have to be taken daily for a period of 21 days starting preferably within the first 5 days of menstrual cycle. After a gap of 7 days (during which menstruation occurs) it has to be repeated in the same pattern. 
  • Oral contraceptive pills inhibit ovulation and implantation as well as alter (change) the quality of cervical mucus to prevent or retard entry of sperms. Progesterone present in OCP- is meant for checking ovulation. Pills are very effective with lesser side effects and are well accepted by the females. Combination or IUDs within 72 hours of coitus have been found to be very effective as emergency contraceptives as they could be used to avoid possible pregnancy due to rape or casual unprotected intercourse.
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अध्याय 4: Reproductive Health - LONG ANSWER [पृष्ठ २७]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 4 Reproductive Health
LONG ANSWER | Q 2. | पृष्ठ २७

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Short answer question.

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______ is not a permanent method of birth control.


Choose the right one among the statements given below.


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Given below are four contraceptive methods and their modes of action. Select the correct match:

Method Mode of action
a) Condom (i) Ovum not able to reach Fallopian tube
b) Vasectomy (ii) Prevents ovulation
c) Pill (iii) Prevents sperm reaching the cervix
d) Tubectomy (iv) Semen contains no sperms

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  • Statement I: It's an oral steroid contraceptive developed by ORI.
  • Statement II: It has a low contraceptive value and a high chance of side effects.

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Given below are certain situations. Analyse the situation and suggest the name of suitable contraceptive device along with mode of action.

Situation Requirement of contraceptive for - Name of contraceptive device Mode of action
1 blocking the entry of sperms through cervix ______ ______
2 spacing between children ______ ______
3 effective emergency contraceptive ______ ______
4 terminal method to prevent any more pregnancy in female ______ ______
5 sterilization in male ______ ______

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