Connective Tissue

Question 1

list the 7 functions of connective tissue

Answer 1

1. connect other tissues
2. enclosing and separating other tissues
3. support and movement
4. storage
5. cushioning and insulation
6. transportation
7. protection

Question 2

list and describe the 3 cells of connective tissue

Answer 2

1. blasts: secrete/create extracellular matrix (builders)
2. cytes: maintain extracellular matrix
3. clasts: break down extracellular matrix

Question 3

will all three cell types be present in every connective tissue type?

Answer 3

no

Question 4

what are the 2 components of the extracellular matrix?

Answer 4

protein fibers and ground substance

Question 5

list and describe the 3 types of protein fibers

Answer 5

1. collagen: most abundant, strong, inelastic, looks like wavy ribbons
2. reticular fibers: looks very fine and highly branched, thinner than collagen fibers, fills space
3. elastic fibers: stretchy, flat ribbons, composed mostly of elastin

Question 6

will all connective tissue types always have all three protein fibers?

Answer 6

no

Question 7

describe ground substance

Answer 7

protein fibers and cells are embedded in this material between both, provides support, different compounds for each connective tissue, can be fluid, hard, gel, etc

Question 8

what are the 2 main type of connective tissue

Answer 8

ordinary and special

Question 9

what are the two types of ordinary connective tissue

Answer 9

loose and dense

Question 10

what does ordinary connective tissue do?

Answer 10

holds things together

Question 11

what does special connective tissue do?

Answer 11

performs special functions

Question 12

what is the difference between loose and dense connective tissue?

Answer 12

loose has more ground substance, dense has more protein fibers

Question 13

what are the 3 types of ordinary loose connective tissue?

Answer 13

1. areolar
2. reticular
3. adipose

Question 14

what is areolar ordinary loose connective tissue? how many types of protein fibers does it have? give an example

Answer 14

the loose packing material of MOST organs, contains all 3 protein fibers, subcutaneous skin layer

Question 15

what is reticular ordinary loose connective tissue and what does it look like? where is it found?

Answer 15

very distinct, many little dots and looks like a berry bush, builds framework for components of the lymphatic system, found in lymphnodes and spleen

Question 16

what type of cells does adipose ordinary loose connective tissue contain and what do they do?

Answer 16

adipocytes that store lipid

Question 17

what is the function and where is adipose tissue located?

Answer 17

fat storage, insulation and cushioning, found everywhere in the body

Question 18

what are the two types of dense ordinary connective tissue?

Answer 18

dense regular and dense irregular

Question 19

describe dense regular ordinary connective tissue

Answer 19

all protein fibers oriented in/ stretch in one direction, contains collagen which is wavy and strong, has a lot less ground substance, less cells and more protein fibers

Question 20

where is dense regular ordinary connective tissue found?

Answer 20

tendons (which connect muscle to bone) and ligaments (which connect bone to bone)

Question 21

describe dense irregular ordinary connective tissue

Answer 21

collagen fibers oriented/stretch in all directions, which allows for more movement, can’t see collagen waviness, just pink areas

Question 22

where is dense irregular ordinary connective tissue found?

Answer 22

dermis of skin, which is so strong its used to make leather

Question 23

what are the 3 types of special connective tissue?

Answer 23

cartilage, bone, and blood

Question 24

describe the extracellular matrix of cartilage and what that means for the cells

Answer 24

more rigid and gel like, cells don’t thrive in it, so they are contained in spaces called lacunae

Question 25

is cartilage vascular or nonvascular? what does this mean for how cells obtain nutrition?

Answer 25

nonvascular, cells must get nutrients through diffusion, so they heal slower

Question 26

what are the 3 types of cartilage?

Answer 26

1. hyaline cartilage
2. fibrocartilage
3. elastic cartilage

Question 27

describe hyaline cartilage and where it’s found

Answer 27

most abundant cartilage, lots of ground substance and collagen fibers so its very strong. Collage fibers are so interspersed that you can’tsee them so it looks transparent, found lots of places, but specifically the rings of the trachea, the bronchi, and connecting the ribs to the sternum

Question 28

describe fibrocartilage and where it’s found

Answer 28

more collagen fibers than ground substance, looks wavy and is very very strong. found in areas under lots of pressure, so the menisci of knees and jaw, intervertebral disks

Question 29

describe elastic cartilage and where it’s found

Answer 29

lost of elastic fibers, can stretch and recoil, elastic fibers are straight (not wavy) found in areas that must be rigid AND flexible, like the ears

Question 30

describe bone

Answer 30

compact, arranged in circle with dark spaces as lacunae

Question 31

describe blood

Answer 31

matrix is very water-based and has many cell types