barrier function
Maintain homeostasis
by constant recycling of the basal cell layer
Dermis
Fibroblasts
Constitutes the bulk of the skin
Composed of collagen with elastin
and glycosaminoglycans (GAG’s)
major role in the biomechanics of the skin
Hypodermis
Adipose tissue (vascularized, connective tissue)
Contributes to both the thermoregulatory
Shoo
*’Nano’ means….
Nanometer: one billionth of a meter
Nano-: prefix comes from the Greek word for ‘dwarf’
Chemical, physical, and biological properties that differ from those of their larger, or bulk counterparts
Nanotechnology: The National Nanotechnology Initiative(NNI)-> the science of materials and phenomena in the range of 1 to 100nm in diameter
*Features of ‘nanoparticles
1. 피부의 기능
• 외상(trauma)과 감염(infection)에 대한 저항
- 피부 보호막은 산성막(acid mantle)이라 불림 => 산성(pH4~6)
• 다른 장벽 기능(other barrier functions)
- 물에 대한 장벽 (과도한 물을 흡수와 손실을 예방)
- 자외선에 대한 장벽, 해로운 약품에 대한 방어벽
• 비타민 D 합성(vitamin D synthesis)
- 피부