W2 Epithelia Flashcards
what do mature fibroblasts look like
dense and very pink collagen fibres with elongated nuclei
whats the job of mature fibroblasts
maintain integrity of tissue by slow turnover of EM
how would you observe that more strength is needed ina tissue
more dense pink collagen
what are basement membranes
arrangement of EM proteins between support tissue and parenchymal
whats the basement membrane between nerve and muscle tissue
external lamina
what do basement membrane do
control epithelial growth
what type of collagen are basement membrane made of
type 4
what are the 3 layers of basement membrane
lamina lucida
lamina densa
lamia fibroreticularis
what is the lamina lucida
transparent layer abut the plasma membrane of basal cells connected
what is lamina densa
intermediate e- dense layer
what is the lamina reticularis
broad layer which merges with supporting tissues
what type of collagen is lamina reticularis made of
type 3 and fibronectin
what type of collagen is lucida and densa made of
type 4 collagen + laminin
what are adipose tissue
store fat in clumps with rich blood supply
what are the 3 layers of skin
epidermis
hypodermis
dermis
what is the hypodermis made of
mature adipose tissue
what is the dermis made of
bundles of collagen fibres and elastic fibres
what are the 2 layers of the dermis
reticular + papillary
what are white adipose tissue
20/25% of male/female body weight of mostly lipid
whats the role of white adipose tissue
thermal insulator
what is stratum basale
basal layer of keratinocytes that proliferates continuously
what is the role of breon adipose tissue
temperature regulation
where is type 1 collagen found
dermis bone and fibrous supporting tissue
where are type 2 collagen found
hyaline cartilage
