Lab 3: connective tissue Flashcards
T or F: connective tissue is the least abundant tissue
FALSEEEE
its the most abundant tissue
what does connective tissue act as
structural framework for other types of tissues
name the 4 types of connective tissue
connective tissue proper
cartilage
bone
blood
name the 6 functions of connective tissue
connect body parts
support
protection
insulation
storage - adipose cells
transport - think of blood vessels
what types of connective tissue are we identifying
dense vs loose
regular vs irregular
where is connective tissue of skin mainly found
dermis and hypodermis
name the components and characteristics of cartilage (first name types -3 and then components -3)
hyalin
elastic
articular
perichondrium
chondroblasts/chondrocytes
isogenic groups
name the classifications of connective tissues
dense vs loose (connective tissue proper)
regular (organized) vs irregular (unorganized)
name the 3 components of connective tissues
fibers
cells
ground substances
name the fibers (components of connective tissues)
collagen
reticular - collagen type III
elastin
name the cells (components of connective tissues)
fibroblasts/fibrocytes
adipose cells
macrophages
immunologic cells
*wont be asked to identify macrophages and immunological cells - and wont be asked to distinguish between fibrocytes/blasts
name the ground substances (components of connective tissues)
glycoproteins
proteoglycans
name the types of glycoproteins - ground substance of ct
fibronectin and laminin
name the types of proteoglycans - ground substance of ct
dermatan sulfate
chondroitin sulfate
keratan sulfate
heparan sulfate
what are glycoproteins
compounds consisting of oligosaccharides linked to proteins at the level of their side chains
what are proteoglycans
compounds consisting of a protein bounded to be a glycosaminoglycan (GAG) group
what are glycosaminoglycans (GAGs)
repeating subunits of disaccharide units that are negatively charge
ex = hyaluronate
what are tendons and ligaments
only form of dense regular connective tissue
what is in tendons
fibrocytes
collagen fiber - type I
describe the connective tissue of the hypodermis
specialized type of loose connective tissue
made of adipose cells
name parts of dermis connective tissue
papillary layer
reticular layer
describe papillary layer (dermis connective tissue) - 4
adjacent (deep) to epidermis
looser irregular CT
highly vascularized and innervated
collagen type I
describe reticular layer (dermis connective tissue) - 3
denser irregular CT
more fibrous than papillary layer
collagen type I
name the classifications of cartilage and a place where it would be found
elastic - ears
hyaline - trachea
articular - long bones
what are the 4 properties of cartilage
collagen type II
avascular
hyaline cartilage is basophilic
covered by a perichondrium (dense irregular CT)
name the 2 growth types of cartilage
appositional
interstitial
name the cells/parts found in hyaline cartilage
ECM
chondroblast
chondrocyte (isogenic group)
perichondrium (dense irregular CT)
fibrocyte
name the cells/parts found in elastic cartilage
lacuna
isogenic group
elastic fibers
chondrocyte
describe articular cartilage
located at end of long bones
helps joints absorb/minimize friction
no perichondrium
name the cells/parts found in articular cartilage
ECM
isogenic group
chondrocyte
no perichondrium
what do fibrocytes look like
flattened dark nuclei
little to no cytoplasm visible
describe appositional growth (of cartilage)
growth due to the perichondrium
chondroblasts secrete matrix and become trapped within it
describe interstitial growth (of cartilage)
chondrocytes divide in their lacunae
compare elastic cartilage to hyaline cartilage
elastic is similar to hyalin
but it has elastic fibers - can be seen in black with Verhoffs stain
describe how articular cartilage helps joints
provides joint with minimal friction properties
absorbs mechanical shock due to the incompressibility of water bound to the proteoglycans of cartilage
