Connective Tissue Flashcards
Where is it found?
Around body
What is the origin of connective tissues?
Embryonic mesenchyme- week 1-3 embryonic development.
What is the function of connective tissue?
- bind cell together
- support and strengthen tissue
- insulate
- medium of diffusion
- energy reserve
What is the composition of connective tissue?
ECM + cells
True or false- ECM is found between a cell.
True.
What is ECM made of?
Protein fiber + ground substance
What make ECM special?
Vascular + has nerves
What is exception of connective tissue that has no blood supply or ECM.
Tendon + cartilage
Whats the features of ground substance?
variable consistency + complex combination
Whats the 3 purpose of ground substance?
medium of diffusion + lubricant + store water
What are mesenchymal cells involved in connective tissue?
fibroblast + adipocyte
What are hematopoietic cells involved in connective tissue?
macrophage (engulf bacteria) , plasma (antibodies) , mast cell (histamine) and leucocytes (eosinphil)
What are the types of fibers?
collagen, reticular and elastic
What makes fibers?
fibroblast
True or false- reticular is made of collagen type 2
False- type 3
True or false- elastin in thinner than collagen type 1
True
Whats the purpose of reticular fiber?
Support organs
Whats the purpose of collagen fiber?
key elements of CT
Whats the purpose of elastin fiber?
ELASTICITY
Where is elastic?
form branching networks
What is the classification of connective tissue?
mature & embryonic
What are the classification of embryonic connective tissue?
mesenchyme and mucus
What is mucus made of?
Hyaluronic acid, collagen fiber and spindle shaped cell
Where is mucus embryonic tissue found?
umbilical chord
Which fiber is mucus made of?
collagen
Which fiber is mesenchyme?
reticular
True or false- mesenchyme have gap junctions.
true
What are the classification of proper connective tissue?
- Loose/aroler
- Dense regular
- Dense irregular
Which has more collagen- loose or dense?
dense
True or false- Loose has collagen and elastic fiber
true
Whats the purpose of loose tissue?
Support epithelial
Whats purpose of dense tissue?
stress resistant & protection.
Whats the difference between the fibers dense regular or dense irregular?
Dense regular: parallel pattern
Dense irregular: interwoven pattern
Where is loose connective tissue found?
Widely distrubuted
Where is dense regular connective tissue found?
tendon and ligament
Where is dense irregular connective tissue found?
heart & dermis of skin
True or false- Loose is more flexible than dense.
True
What are the 4 types of specialized tissue?
reticular, adipose, bone and cartilage
Whats the purpose of reticular tissue?
support cell type
What cell and fibers is reticular tissue made of?
reticular fibers and reticular cells
Where is the location of reticular tissue?
Spleen, stroma of liver and lymph node.
What is the purpose of adipose tissue?
energy storage & insulation
What is adipose made of?
adipocyte, reticular fiber and CT septa
What is the type of adipose tissue?
White & brown
Which adipose has a large lipid droplet?
White droplet
Which adipose has a mitochondria?
brown adipose
What does white adipose tissue produce?
Hormone, cytokine and growth factor
True or false- brown adipose is only found in babies
true
What is cartilage made of?
ECM but no neruovascular bundle
Whats the three type of cartilage?
hyaline, fibro & elastic
Whats the strongest cartilage?
fibro
Whats the most elastic cartilage?
elastic
Whats the most abundant cartilage?
hyaline
Which cartilage isnt made of elastin?
hyaline and fibro
Whats the nucleus in all cartilages?
hyaline: flat
fibro: circular
elastic: visible
Whats the function of elastic cartilage?
Being flexible
Whats the function of fibrocartilage?
resistant to compression
Whats the function of hyaline cartilage?
friction
Whats location of hyaline cartilage?
joint, respiratory passage, rib and epiphyseal plate of long bone
Whats location of fibrocartilage?
intervertebral disc
Whats location of elastic cartilage?
auricle of ear
Which cartilage has lowest repair?
hyaline
What cells make bone?
osteocyte (tissue)
osteoblast (matrix)
osteogenic cell (stem)
osteoclast (resorbs bone)
What is matrix of bone?
organic (collagen) and inorganic
What are bone shape types?
long, short, irregular and flat
What are types of bones?
compact and spongy
What is compact made of?
osteon and marrow cavity
What is spongy made of?
No osteon
Which is lighter- spongy or compact?
spongy
Where is compact bones found?
outer layer of long bone
Where is spongy bones found?
everywhere
What happens when one ages?
less collagen or elastin due to less fibroblast - tissue wears out.
Why do tissues heal faster in young adults?
nutritional state- optimum blood supply.