Mucocutaneous zone
（重定向自Mucocutaneous）
A mucocutaneous zone is a region of the body in which mucosa transitions to skin. Mucocutaneous zones occur in animals, at the body orifices.
In humans, mucocutaneous zones are found at the lips, nostrils, conjunctivae, urethra, vagina (in females), foreskin (in males), and anus.