There are four different types of volcanoes. A volcano is categorized both by formation and appearance. Different types of volcanoes also indicate the types of expected eruptions. The different types of volcanoes are: composite (or stratovolcanoes), shield, cinder cones and spatter cones.
A Vaginal Ring is a thin, transparent, flexible ring that you insert into the vagina yourself to provide contraception protection. Leave the Vaginal Ring in for 3 weeks while it slowly releases estrogen and progestin hormones into the body.
1 A vaginal pessary is a plastic or rubber ring inserted into your vagina to support the bladder. 2  Your doctor or other care provider fits you for the device and shows you how to clean and reinsert it on your own. 3  Many women use pessaries as a temporary alternative to surgery, and some use them when surgery is too risky.