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प्रश्न
What are the different methods of contraception?
उत्तर
The contraceptive methods can be broadly divided into the following types:
- Natural method: It involves avoiding the chances of meeting sperm and ovum. In this method, the sexual act is avoided from day 10th to 17th of the menstrual cycle because during this period, ovulation is expected and therefore, the chances of fertilization are very high.
- Barrier method: In this method, the fertilization of ovum and sperm is prevented with the help of barriers. Barriers are available for both males and females. Condoms are barriers made of thin rubber that are used to cover penis in males and vagina in females.
- Oral contraceptives: In this method, tablets or drugs are taken orally. These contain small doses of hormones that prevent the release of eggs and thus fertilization cannot occur.
- Implants and surgical methods: Contraceptive devices such as the loop or Copper-T are placed in uterus to prevent pregnancy. Some surgical methods can also be used to block the gamete transfer. It includes the blocking of vas deferens to prevent the transfer of sperm, known as vasectomy. Similarly, the fallopian tubes of the female can be blocked so that the egg will not reach the uterus, known as tubectomy.
संबंधित प्रश्न
If a woman is using a copper-T, will it help in protecting her from sexually transmitted diseases?
State the changes that take place in the uterus when Implantation of embryo has occurred
Give appropriate biological/technical terms for the following:
The kind of twins formed from two fertilized eggs.
Give scientific reasons: When an ovum gets fertilized, menstrual cycle stops temporarily in a woman.
State the main function of the Sperm duct.
Which part of the human body produces ova?
Why is it an advantage for the testes to be situated in the scrotal sac outside the main body cavity? Can you think of one disadvantage?
Which structure in human female is equivalent to the vas deferens in the male?and in what respect the structures are equivalent?
What is placenta? What is its function?
Fertilisation results immediately in the formation of :
(a) a zygote
(b) an embryo
(c) a placenta
(d) a foetus
Describe in brief the role of ureter in human male reproductive system.
Draw a diagram of human female reproductive system and label the part.
(i) That produces eggs.
(ii) Where fusion of egg and sperm take place.
(iii) Where zygote is implanted.
What happens to human egg when it is not fertilized?
In male and female reproductive system of human, ______ gland is same.
Gender of child is determined by the male partner of couple. Explain with reasons whether this statement is true or false.
Choose the correct answer:
Binary fission is a method of __________
Choose the correct answer:
First menstrual cycle is known as ___________
Draw a labeled diagram of the human female reproductive system.
State the Location:
Prostate gland
Choose the Odd One Out:
Choose the Odd One Out: