L1 Flashcards
Features of epidermis 3
Stratified barrier
Keratinocytes
avascular
Features of dermis
Protein fibres for strength
vascular
Feature of hypodermis
Adipose tissue
What is the corneum layer (epi)
Dead outer layer
What is the Granulosum layer Epi
Contains granules that promote dehydration of cell
cross linking of keratin fibre
What is the spinosum layer? epi
desmosomes link cells together
what is basale layer? epi
Columnar regenerative cells
replenishes layer above
What does desmosomes and hemidesomosomes do?
-anchors adjacent cells
-Anchors stratum basale to dermis
what is the extra layer for thick skin
Lucidum
From outer to inner name the layers
Come Lets Get Some Burgers
Corneum, Lucidum, Granulosum, Spinosum, basale
Papillary layer of dermis
Highly vascularised tissues for nourishment
Reticular layer
Mesh like structure of collagen and elastin fibres for strength
Cutaneous plexus
blood vessels at dermis/hypodermis to supply blood for hair follicles and sweat glands
subpapillary plexus
blood vessels providing oxygen to upper dermis and epidermis
what does the hypodermis do?
contains adipocytes that produce subcutaneous fat for energy and insulation
what is 1st burn?
superficial (epidermis) damage
normal 2nd burn
Epidermis + varying amounts of dermis
painful, moist, blisters
deeper 2nd burn
whiteish waxy looking areas
hair follicles and sweat glands intact
3rd burn
Extends into subcutaneous tissue
waxy white, deep red or black
sensory nerve endings destroyed
