Sexually Transmitted Diseases Problem Set
Problem 12: Diaphragms and Cervical Caps
Diaphragms and cervical caps serve as physical barriers and prevent sperm from reaching the cervix. They are good protection against STDs transmitted by exchange of body fluids.
Diaphragms and cervical caps serve as physical barriers and prevent the sperm from reaching the cervix, but do not prevent body fluids to be ejaculated into the vagina. To prevent unwanted pregnancies, the cervical cap or the diaphragm needs to be inserted before penis-vagina contact and must be left in place for at least 8 hours after intercourse. Both require practice to insert.
Both devices must be used with spermicide jelly or cream. These spermicidal agents must be inserted into the vagina about 15 to 30 minutes before intercourse. The spermicides kill the sperm that are ejaculated into the vagina within the 8 hours following intercourse, but they offer minimal STD protection.
The Biology Project
University of Arizona
Thursday, May 7, 1998
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