UNIT

3UNIT

5

Biology and Geology 3. Secondary Education

METHODS OF CONTRACEPTION

Human reproduction

UNIT

3UNIT

5 Methods of contraception

BARRIER METHODS

• The most frequently used are the condom and the diaphragm. They prevent contact between the sperm and the egg. To be effective, they must be put on properly before sexual intercourse takes place.

The condom is the best way to prevent the transmission of sexually-transmitted diseases (STDs).

Diaphragm

Biology and Geology 3. Secondary Education

UNIT

3UNIT

5

Such as the intrauterine device or IUD, for example. It is normally a T-shaped device which a doctor fits in the uterus. It affects implantation and the mobility and viability of the spermatozoa.

MECHANICAL METHODS

IUD

Methods of contraception

Biology and Geology 3. Secondary Education

UNIT

3UNIT

5 Methods of contraception

These methods are usually irreversible, and consist of cutting the Fallopian tubes, in the case of tubal ligation, or the vas deferens in the case of vasectomy.

SURGICAL METHODS

Tubal ligationVasectomy

Biology and Geology 3. Secondary Education