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Question

Contraceptive oral pills help in birth control process by
  1. Preventing ovulation
  2. Killing the ova
  3. Killing the sperms
  4. Forming barriers between sperms and ova

A
Preventing ovulation
B
Killing the ova
C
Killing the sperms
D
Forming barriers between sperms and ova
Solution
Verified by Toppr

  • Fertilization of the ovum and its subsequent implantation is referred to as conception or pregnancy. Prevention of conception is called contraception.
  • Oral contraceptives (birth control pills) can be taken to change the hormonal balance of the body so that the ovum is not released from the ovary.
  • The pills may contain combinations of the hormones estrogen and progestins or progestins alone.
  • Combinations of estrogen and progestins prevent pregnancy by inhibiting the release of the hormones luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland, which further prevents ovulation.

Thus, the correct answer is option A.

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A. Condom, diaphragm, and cervical caps are the common barriers used to prevent pregnancy.
B. Oral pills and vaginal pills are the chemical method practiced for the prevention of pregnancy.
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iii. Contraceptive birth pills help in preventing ovulation thus preventing pregnancy

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(i) Vasectomy - Sterilization procedure in the female.
(ii) Emergency contraceptive - Morning after pills.
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