classifying connective tissue Flashcards
loose tissue
many cells
randomly arranged
mostly ground tissue
function of loose tissue
binds structures
examples of loose tissue
lamina propa
pulp
describe lamina propria
loose connective tissue
immediately underlying certain epithelia
very thin Cl layer
ground substance + loosely arranged
fibres
allows blood vessels to serve epithelia tissues above
+ve = good for diffusion
-ve = good breeding ground for microbes
usually has immune cells
what is an advantage of lamina propria
good for diffusion
=nutrients + waste products
what is a disadvantage of lamina propria
good breeding ground for microbes
= due to the extra space
describe dense irregular connective tissue
fewer cells
less ground substance
more ECM fibres - randomly arranged
function - strong, withstand pressure from different directions
eg. dermis - skin
what is the function of dense irregular connective tissue
strong
withstand pressure from different directions
give an example of dense irregular connective tissue
dermis - skin
describe loose connective tissue - areolar
many cells
mostly ground substance
fibres loosely + randomly arranged
function: bind structures, diffusion
eg. lamina propria, pulp
describe dense regular connective tissue
fewer cells
less ground substance
dense ECM fibres - organised in parallel
function: tensile, strength, resist forces in 1 direction
eg. tension, ligaments
what is the function of dense regular connective tissue
tensile
strength
resist forces in 1 direction
describe fibrillin
marfan’s syndrome
affects tissues rich in elastic fibres - aorta, risk of aortic aneurysms
skeletal defeat - long digits + arms
type I collagen
osteogenesis imperfecta
brittle bones/malformation
type II collagen
chondrodysplasia
cartilage defects
joint abnormalities
type I, II, V collagen
ehlers danlose syndrome
fragile, extra elastic skin
hypermobility of joints
describe brown adipose tissue
multiocular
many smaller lipid droplets
look empty in sections - lipid washed away
most common in newborn
in adult found around kidney/adrenals
rich in capillaries + mitochondria
specialised in thermogenesis
who is brown adipose tissue most common in
newborns
where is brown adipose tissue found in adults
around the kidney / adrenals
what is brown adipose tissue rich in
capillaries
mitochondria
what is brown adipose tissue specialised in
thermogenesis
why might sections look empty in brown adipose tissue
lipid has washed away
describe white adipose tissue
unilocular - eye look
single larger lipid droplet
look empty on sections - lipid washed away
can can stain with red O/ Sudan Red
most common in adult
brown/white
white = stores energy /metabolic or structural roles
structural = fill spaces, act as padding - thermal insulator or shock absorbing
stored and mobilises triglycerides
what you stain white adipose tissue with
oil red O
Sudan Red
