What primary function does a diaphragm serve?

The primary function of a diaphragm is to prevent sperm from fertilizing an egg. This is a form of barrier contraception that is designed to block sperm from entering the uterus during intercourse. The diaphragm is typically placed over the cervix, creating a physical barrier that prevents sperm from reaching the egg, thereby reducing the likelihood of pregnancy.

In this context, the diaphragm is distinct from other contraceptive methods. It does not enhance sexual pleasure, provide protection against sexually transmitted infections (STIs), or function as a hormonal contraceptive. Understanding the diaphragm's role as a barrier method is key to recognizing its effectiveness and application in family planning.