Skin Flashcards
Skin is a combination of what 4 primary tissues
Epithelium
Connective tissue
Muscle
Nerve
Function of skin
UV protection
Sensory
Immune surveillance
Energy storage
3 Layers of skin
Epidermis
Dermis
*Hypodermis (adipose layer)
Epidermis 5 strata laters
Stratum Coneum Stratum Luciderm Stratum Granulosum Stratum Spinosum Stratum Basale Dermis
Epidermis
Stratified squamous keratinising epithelium
Epidermal Cells
Keratinocytes- regeneratiom
Melanocytes- pigment
Langerhans- immunity
Merkel cells- sensory
Stratum Basale
tall columnar cells
Melanocytes and merkel cells
bound to BM by hemidesmosomes
Stratum Spinosum
Microfilaments between desmosomes
Stratum Granulosum
Granules of keratohyalin (precursor for keratin)
Stratum Luciderm
Conversion of Keratohyalin to keratin
Dermis Layers
Papillary Dermis
Reticular Dermis
Papillary Dermis
Blood vessels
Macrophages
Loose connective tissue
Nerve endings
Reticular Layer
Collagen bundles in 3 planes
Dense irregular connective tissue
Elastic fibres
Features of Skin
Waterproofing
Skin colour
Hair
Hair Follicle
Erector pilli muscle
Sebaceous gland
