Integumentary Flashcards
(13 cards)
Function of the skin
Protection Temp Regulation Secretion Absorption Vitamin D synthesis
Corneum
Water loss protection
Protects underlying structures from external environment
Granulosum
Represents change of living to dead cells
Spinosum
Brings structure closer together with outer projections
Basal
Detects light touch
Reproduces cells
Receives nourishment from dermal blood supply
Sebaceous glands
Secretes sebum which acts as lubricant and antibacterial agent
Sweat glands
Functions to cool body
Arrector pili muscle
Contracts in response to fear, cold and touch
Vasodilation
- Blood temp rises
- More heat is released
- Skin becomes pink
- Sweat glands activated
Vasoconstriction
- Blood temp lowers
- Maintaining body core temp
- Skin becomes pale
Skin protection
Prevents entry of foreign substances
Keratinocytes form acid mantle
Melanin protects ultra ray violet damage
Collagen
Gives strength to skin and maintains hydration
Elastin
Allows skin to stretch and recoil