Skin Structure and Function Tutorial Flashcards
What happens at the matrix region of the hair follicle?
keratin is produced by keratin producing cells
Where is “soft” keratin found in the hair follicle?
Central medulla
Where is “hard” keratin found in the hair follicle?
Outer cortex
What does acute dermatitis look like on the microscope?
Intra-epidermal vesicles containing white cells and cell debris; spongiosis
What does psoriasis look like on the microscope?
parakeratosis, micro-abscesses, elongated rete pegs
What does bullous pemphygoid look like on the microscope?
fluid filled bullae with eosinophils, split through DEJ and epidermis forms blister roof
Effects of skin failure
Loss of thermoregulation, increased risk of infection, failure of homeostatic function eg fluid losses
3 stages of skin healing
inflammation, proliferation, tissue remodelling
What is primary intention healing
acute wound closed by suture
What is secondary intention healing
acute wound left to heal on its own
What is a first degree burn
epidermis only
What is a second degree burn
epidermis and dermis
What is a third degree burn
extends beyond dermis
When would a wound be considered chronic
after 3 months
