Restriction of Birth Rate
Restriction of birth rate is a chain of the actions directed on prevention or decrease in probability of an opportunity to become pregnant. These methods and intentions of restriction of birth rate can be considered, as the basic component of planning of family. Mechanisms, which are intended to reduce probability fertilisation eggs spermatozoon it is possible to name on contraception. Contraception differs from abortion, its methods first of all prevent fertilisation, and abortion deals with already come pregnancy.
There are various opinions on the account of restriction of birth rate. The some people protest against everything, except for sexual abstention. They count any forms of restriction of birth rate "unnatural", but suppose natural restriction of birth rate. Other including those who support the majority of forms of restriction of birth rate which prevent fertilisation, oppose any method of restriction of birth rate which interferes with the impregnated embryo to be peculiar to a uterus and to begin pregnancy.
Methods
Avoiding Vaginal Intercourse
Sexual abstention (also known as a celibacy), is practice of avoiding all sexual activity. It is the unique form of restriction of birth rate which gives 100 % of a guarantee, that the woman will not become pregnant, if it is executed correctly.
The risk of pregnancy also is insignificant small at non-vaginal sex, such as outercourse (sex without penetration), anal sex or oral sex.
Coitus Interruptus
Coitus interruptus (it is literally "the interrupted sex"), also known as the method of withdrawal, consists that the partner interrupts the act before approach ejaculation, and sperm does not get in a vagina. The main risk coitus interrupts is that the man can be late with maneuver. Though at the analysis of sperm in pre-ejaculate some small studying could not find any viable sperm in a liquid.
Methods of a Barrier
Methods of a barrier create a physical barrier between a spermatozoon and an egg.
The most widely known method of a barrier is a man's condom, placed atop of a member. The condom can be also female. It is developed specially for a vagina and represents long thin bag from latex with a dense ringlet on edge.
Cervical barriers are the devices which are taking place completely within the limits of a vagina. Cervical cap is the least cervical barrier. It is kept in a place for the account suction to cervix or to vaginal walls. The Lea's shield is the greatest cervical barrier which also is supported in a place by suction. The diaphragm is inserted so, that covers cervix uterus and is kept in a place by bones and muscles of a basin. The contraceptive sponge has a depression to hold it in place over the cervix.
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