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# University of Basrah Collage of Medicine Department of Anatomy ## 1st Stage MC - Basic Anatomical Structures - Skin and Facia - Muscles ## Lecturer Dr. Samer S. AL-Nussairi Orthopedic Specialist # The Skin The skin forms the largest organ in the human body. It covers 1.5-2 m^2 and repres...

# University of Basrah Collage of Medicine Department of Anatomy ## 1st Stage MC - Basic Anatomical Structures - Skin and Facia - Muscles ## Lecturer Dr. Samer S. AL-Nussairi Orthopedic Specialist # The Skin The skin forms the largest organ in the human body. It covers 1.5-2 m^2 and represents 8-16% of body weight. # Functions of Skin The skin has many functions such as protection, regulation, and sensation and syntheses of Vitamin D. ## Skinfunction: Overview | Regulation | Brain | Information for your brain | Sensory | |--------------------------------| ------|-------------------------| -------- | | Body Temperature (sweating, blood circulation, fat) | Spine | Skin Sensors | Cold | | Produces vitamin D | Nerves| | Heat | | | | | Pain | | | | | Touch, Pressure | ## Barrier Function (Protection) The skin is the first defense mechanism. It protects the underlying structures against the following: - Water - Bacteria, Viruses - Sunbeams