Chemical Methods Of Contraception

March 08, 2020

This is followed by a number of hormone-based methods including oral pills patches vaginal rings and injections. Spermicides are chemicals that are placed in the vagina that kill sperm.

Spermicides Chemical Method

The various methods of contraception are as follows.

Chemical methods of contraception. Sponges which are saturated with spermicides are placed in the vagina at the cervical opening. Combinations of spermicidal chemicals and barrier methods achieve lower failure rates than do the methods when used separately. Biological contraceptives act on various parts of the reproductive process for example on the movement of.

There are mainly three types of contraception they are. It involves avoiding the chances of meeting of sperms and ovum. Human fertility is controlled by hormones so fertility can be controlled using hormonal forms of contraception.

Themorning after pillis one of the most commonly used chemical contraceptive methods. There are many chemical methods designed to prevent pregnancy. Success Rate with Typical Use.

Depend on time of ovulation. The most effective methods of birth control are sterilization by means of vasectomy in males and tubal ligation in females intrauterine devices IUDs and implantable birth control. Some of the chemical components present in them are nonoxynol-9 memfegol.

Jelly melting film and sponge that are used as contraceptive meth ods. Chemical contraceptives use artificial hormones to manipulate a womans menstruation cycle. Polyoxythene IO and nonyphenylether NP 10.

Synthetic progesterones include three groups pregnanes oestranes and gonanes. These are usually consumed orally and are designed to prevent female gametes ovules from meeting male partners Spermatozoa. The pregnancy can be prevented by changing the hormonal balance of the body due to which the body will not release the eggs and therefore preventing fertilization.

Spermicides are chemical contraceptives that are useful additional safeguards when used in conjunction with barrier methods of contraceptives such as. The oral contraceptive which is known as the pill contains oestrogen or. Chemical barriers or spermicides are sperm-killing substances available as foams creams gels films or suppositories which are often used in female contraception in conjunction with mechanical barriers and other devices.

Spermicides arent very effective on their own and shouldnt be used alone as a contraceptive but when used with a diaphragm a cervical cap or a condom they suddenly start making an impact. The synthetic oestrogens used in contraception are ethinyl oestradiol and mestranol. In this method the sexual act is avoided from day 10th to.

Long-term method of birth control protects against pregnancy for 3 years after insertionit can be removed by a health care provider when you want to or you can wait for 3 years when its time for a change of implant. No chemicals are used. Chemical Methods Many chemical preparations are available in the fonn of foaming tablet cream.

The only male mechanical barrier that is practically in use is condoms whereas there are various methods of barrier contraception available for women that include diaphragm female condom intrauterine devices and cervical caps. Calender method safe period method natural method. They come in all sorts of forms pastes foams films and more but they all work by creating an environment that makes life difficult for sperm to move around freely.

The contraceptive methods can be broadly classified into the following categories. These arc lethal to the perms. So pregnancy occurs if.

Not as reliable as other methods especially if the menstrual cycle is irregular. Introducing the basic principles upon which all chemical methods of contraception work and how the methods of delivery vary. Chemical methods of contraception include any hormonal preparation that serves to alter the hormonal balance of the body to prevent egg maturation.

The natural method is chosen by some groups opposed to contraception for religious or. Combination contraceptives unite both chemical methods that are used locally and mechanical methods. Hormonal contraceptives are the most effective spacing methods of contraception.

Spermicides are usually available without a prescription or. Surgical methods include vasectomy blocks vas deferens to prevent sperms from coming out and tubectomy blocks fallopian tubes to prevent the entry of eggs in it in males and females respectively. Dangerous period ovulation occurs on 14 day ovum viable for 48-72 hrs sperm remain alive for 24-48 hrs.

The chemical contraceptive methods that are used before having sex are produced based on hormones like progesterone and estrogens. A CONTRACEPTIVE ADD ON. The gonadal steroids oestrogen and progesterone are effective in contraception.

Chemical barriers of contraception are also widely available which include spermicides. They include chemical melting caps sponges tampons saturated with spermicides and douches that spray the vagina with spermicides.

Biology Notes For Igcse 2014 120 Method Of Birth Control