intro to derm Flashcards
4 functions of skin
- protection
- UV, mech, infeciton, dehydration - body temp
- vit D syn
- appearance
3 layers of skin
- epiderm
- dermis
- subcutis (hypodermis)
5 layers epi from out to in
Candians like good sushi boxes
- corneum
- lucidum
- granulosum
- spinosum
- basale
3 main cell types in epi
- keratinocytes
- melanocytes
- langerhans
what are keratinocytes
- throughout epi except top layer
- connected by demosomes
- make keratin
what are melanocytes
- located in bottom layer
- we all have the same number
- make melanin
what are langerhans cells
- antigen presenting cells
- find intruders and set off innate systme
2 layers of dermis
- papillary
2. reticular
2 types of cells in dermis
- fibroblasts
2. mast cells
what are fibroblasts
- most abundant
- produce collagen and elastin
what are mast cells
immediate hypersensitivity reactions
4 other component of dermis
- blood vessels
- nerves
- pilosebacous unti
- hair follicle
- sebacous gland
- smooth muscle - sweat glans
name 2 sizes of raised superficial lesions
-1 - papule
+1 - plaque
name 2 sizes of raised deep lesions
- 1 - nodule
+1 - tumour
name 2 sizes of raised lesion with fluid
-1 vesicle
+1 - bullae
name 2 sizes of raised lesion with pus
- 1 pustule
+1 - abscess
name 2 sizes of raised lesion with halo or central clearing
both wheal or hive
name 2 sizes of flat lesions that differ in color from surrounding
-1 macule
+1 - patch
