Lab 3: connective tissue

Question 1

T or F: connective tissue is the least abundant tissue

Answer 1

FALSEEEE
its the most abundant tissue

Question 2

what does connective tissue act as

Answer 2

structural framework for other types of tissues

Question 3

name the 4 types of connective tissue

Answer 3

connective tissue proper
cartilage
bone
blood

Question 4

name the 6 functions of connective tissue

Answer 4

connect body parts
support
protection
insulation
storage - adipose cells
transport - think of blood vessels

Question 5

what types of connective tissue are we identifying

Answer 5

dense vs loose
regular vs irregular

Question 6

where is connective tissue of skin mainly found

Answer 6

dermis and hypodermis

Question 7

name the components and characteristics of cartilage (first name types -3 and then components -3)

Answer 7

hyalin
elastic
articular

perichondrium
chondroblasts/chondrocytes
isogenic groups

Question 8

name the classifications of connective tissues

Answer 8

dense vs loose (connective tissue proper)
regular (organized) vs irregular (unorganized)

Question 9

name the 3 components of connective tissues

Answer 9

fibers
cells
ground substances

Question 10

name the fibers (components of connective tissues)

Answer 10

collagen
reticular - collagen type III
elastin

Question 11

name the cells (components of connective tissues)

Answer 11

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

Question 12

name the ground substances (components of connective tissues)

Answer 12

glycoproteins
proteoglycans

Question 13

name the types of glycoproteins - ground substance of ct

Answer 13

fibronectin and laminin

Question 14

name the types of proteoglycans - ground substance of ct

Answer 14

dermatan sulfate
chondroitin sulfate
keratan sulfate
heparan sulfate

Question 15

what are glycoproteins

Answer 15

compounds consisting of oligosaccharides linked to proteins at the level of their side chains

Question 16

what are proteoglycans

Answer 16

compounds consisting of a protein bounded to be a glycosaminoglycan (GAG) group

Question 17

what are glycosaminoglycans (GAGs)

Answer 17

repeating subunits of disaccharide units that are negatively charge
ex = hyaluronate

Question 18

what are tendons and ligaments

Answer 18

only form of dense regular connective tissue

Question 19

what is in tendons

Answer 19

fibrocytes
collagen fiber - type I

Question 20

describe the connective tissue of the hypodermis

Answer 20

specialized type of loose connective tissue
made of adipose cells

Question 21

name parts of dermis connective tissue

Answer 21

papillary layer
reticular layer

Question 22

describe papillary layer (dermis connective tissue) - 4

Answer 22

adjacent (deep) to epidermis
looser irregular CT
highly vascularized and innervated
collagen type I

Question 23

describe reticular layer (dermis connective tissue) - 3

Answer 23

denser irregular CT
more fibrous than papillary layer
collagen type I

Question 24

name the classifications of cartilage and a place where it would be found

Answer 24

elastic - ears
hyaline - trachea
articular - long bones

Question 25

what are the 4 properties of cartilage

Answer 25

collagen type II avascular hyaline cartilage is basophilic covered by a perichondrium (dense irregular CT)

Question 26

name the 2 growth types of cartilage

Answer 26

appositional interstitial

Question 27

name the cells/parts found in hyaline cartilage

Answer 27

ECM chondroblast chondrocyte (isogenic group) perichondrium (dense irregular CT) fibrocyte

Question 28

name the cells/parts found in elastic cartilage

Answer 28

lacuna isogenic group elastic fibers chondrocyte

Question 29

describe articular cartilage

Answer 29

located at end of long bones helps joints absorb/minimize friction no perichondrium

Question 30

name the cells/parts found in articular cartilage

Answer 30

ECM isogenic group chondrocyte no perichondrium

Question 31

what do fibrocytes look like

Answer 31

flattened dark nuclei little to no cytoplasm visible

Question 32

describe appositional growth (of cartilage)

Answer 32

growth due to the perichondrium chondroblasts secrete matrix and become trapped within it

Question 33

describe interstitial growth (of cartilage)

Answer 33

chondrocytes divide in their lacunae

Question 34

compare elastic cartilage to hyaline cartilage

Answer 34

elastic is similar to hyalin but it has elastic fibers - can be seen in black with Verhoffs stain

Question 35

describe how articular cartilage helps joints

Answer 35

provides joint with minimal friction properties absorbs mechanical shock due to the incompressibility of water bound to the proteoglycans of cartilage