Skin+cross+section

By: Kimanh Nguyen

The skin serves as a protective barrier against infections, injuries, and ultraviolet radiation from the sun. It also helps regulates the body temperature



__ The skin cross section includes: __


 * 1) Skin
 * 2) Hair
 * 3) Nails
 * 4) Sweat glands
 * 5) Sebaceous glands
 * 6) Epidermis
 * 7) Dermis
 * 8) Hypodermis
 * 9) Fat
 * 10) Nerves
 * 11) Blood vessels
 * 12) Sweat pore
 * 13) Hair follicle

__ Functions: __

v Skin


 * § The largest organ of the body
 * Ø Protects us from microbes
 * Ø Helps regulate body temperature
 * Ø Permits the sensation of touch, heat, and cold

v Hair


 * Ø Insulation
 * Ø Provides some protection
 * Ø Affects physical appearance

v Nails


 * Ø Protect sensitivity of the fingers/toes
 * Ø Affect physical appearance

v Sweat glands


 * § Located in the dermis
 * Ø Secrete sweat to regulate body temperature

v Sebaceous glands


 * Ø Secrete an oily substance called sebum
 * Ø Protects and waterproofs hair and skin

v Epidermis


 * § Outermost layer of the skin
 * Ø A waterproof barrier
 * Ø Creates our skin tone

v Dermis


 * § Beneath the epidermis
 * Ø Contains tough connective tissue, hair follicles, and sweat glands

v Hypodermis


 * § Deeper subcutaneous tissue that is made of fat and connective tissue
 * Ø Binds the skin to the tissue beneath it

v Fat


 * Ø Energy supply
 * Ø Thermal insulation

v Nerves


 * Ø Connect the brain and spinal cord with various parts of the body
 * Ø Conducts impulses from the brain

v Blood vessels


 * § Include arteries and veins
 * Ø Carry blood throughout the body
 * Ø Contain oxygen and nutrients to take to the muscles

v Sweat pore


 * Ø Releases oil and sweat on the body to regulate body temperature

v Hair follicle


 * Ø Contains the root of a hair within its small tubular cavity