Adorable animal families that will make you aww. The perineurium is a protective layer of tissue located around nerves in the body and the internal organs. It is composed of concentric layers of connective tissue that form a protective sheath around bundles of nerve fibers.
HPV stands for human papillomavirus (pronounced pap ah LO mah), but there are actually more than 100 related viruses in this group. Each HPV virus is given a number or type. The term papilloma refers to a kind of wart that results from some HPV types. HPV lives in the body's epithelial cells.ach HPV virus is given a number or type. The term papilloma refers to a kind of wart that results from some HPV types. HPV lives in the body's epithelial cells.
Sexually transmitted HPV comes in two different types: 1  Low-risk HPV types cause genital warts -- bumps on the penis or vagina. 2  High-risk HPV types cause cancers in both men and women.