Stony Meteorites. Stony meteorites, the most common type of meteorite, are generally composed of approximately 75 â 90% silicon-based minerals, 10 â 25% nickel-iron alloy, and trace amounts of iron sulfide. Stony meteorites account for ~94% of observed meteorite falls, and can be divided into two distinct categories: Chondrites and achondrites.
Vulvar cancer is a type of cancer that occurs on the outer surface area of the female genitalia. The vulva is the area of skin that surrounds the urethra and vagina, including the clitoris and labia. Vulvar cancer commonly forms as a lump or sore on the vulva that often causes itching. Though it can occur at any age, vulvar cancer is most commonly diagnosed in older women. Vulvar cancer treatment usually involves surgery to remove the cancer and a small amount of surrounding healthy tissue. Sometimes vulvar cancer surgery requires removing the entire vulva. The earlier vulvar cancer is diagnosed, the less likely an extensive surgery is needed for treatment. Symptoms.
The term vulva means the external sex organs of a woman. The vulva is made up of two pairs of lips. The outer pair of lips is called the labia majora and the inner pair of lips is called the labia minora.Between these lips are two openings. One is the entrance to the vagina. The other is the urethra, which is the outlet for urine.At the front of the vulva is the clitoris, which helps a woman reach a sexual climax. The opening to the back passage, the anus, is also close to the vulva, but is separate from it. The sheet of skin between the vagina and the anus is called the perineum.he term vulva means the external sex organs of a woman. The vulva is made up of two pairs of lips. The outer pair of lips is called the labia majora and the inner pair of lips is called the labia minora.