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Integument System - Coggle Diagram
Integument System
Integument Primary Functions
Protection
Barrier
Immunologic Cells
Homoestasis
Water
Temperature
Sensory
Exocrine
Sweat
Oil
Endocrine
Vitamin D
Layers of Epidermis
Stratum Corneum
Protection
Water barrier
Friction
Keratinocytes
Shed 30-47 Days
Produce Keratin
Produce and Secrete lipids
Vitamin D synthesis
Keratinocytes make up many layers
Keartinocytes are dead (anuclear)
Desquamation (sheding)
Keratinocytes secrete defensins
Stratum Lucidum
Thick Skin
Finger tips/ Palms/ Soles
No Hair
Only Eccrine sweat Glands
Stratum Granulosum
Keratinocytes contain:
Keratohyalin
Lamellar Grangules
Filaggrin
Stratum Spinosum
Protects from Friction and Pressure
Langerhan Cell
Tonofibrils
Attach many desmosomes
Looks Spiny
Stratum Basale
Cells
Mitotically Active Cuboidal Cells
Melanocytes
Derived from neural crest
Produce and DONATE melanin to keratinocytes to help protect against UV radiation
Pale cytoplasm
Merkel Cells
Function
Attach to Basement Membrane
Previtamin D3 synthesized
Pigment Development
Melanin is produced my melanocytes in the stratum basale
Tyrosinase enzyme
Albinism
Vitiligo
Dermis
Nerve Receptors/Cells
Hair/Nails
Glands
Wound Healing