Copy Right- Hongqi y-Fudan Un/versity Lip and cheek philtrum人中 Philtrum groove 人中沟 Lip-with mucosa not skir With rich blood vessel nasolabial sulcus鼻唇沟 acupucture point Cyanosis when hypoxia In emergent condition Such as shock Cheeks Consist of the lateral wall of oral cavity Skin-subcutaneous fat-facial muscles-mucosa Papilla of parotid duct Opposite to the 2th molar tooth of the maxilla Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan UniversityCopy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Lip and cheek nasolabial sulcus 鼻唇沟 Philtrum groove 人中沟 philtrum人中 Cheeks Consist of the lateral wall of oral cavity Skin-subcutaneous fat-facial muscles-mucosa Papilla of parotid duct Opposite to the 2th molar tooth of the maxilla acupucture point In emergent condition Such as shock Lip-with mucosa not skin With rich blood vessel Cyanosis when hypoxia