Cartilage

Question 1

Cartilage is (vascular/avascular) and contains (nerves/no nerves)

Answer 1

Avascular and no nerves

Question 2

Chondroblasts

Answer 2

secrete cartilage matrix that surrounds cells in a LACUNA where cells mature into Chondrocytes

Question 3

Chondrocytes

Answer 3

Mature cartilage cells

Question 4

Lacuna

Answer 4

Space that houses mature chondrocytes

Question 5

What type of collagen is dominate in cartilage?

Answer 5

TYPE II Collagen is dominant in cartilage (Type I is dominate in connective tissue)

Question 6

Territorial Cartilage matrix

Answer 6

directly surrounds chondrocytes

Question 7

Interterritorial cartilage matrix

Answer 7

Surrounds several territorial groups

Question 8

Perichondrium

Answer 8

a girdle-type net of dense irregular CT with vascular and nutrient supply. Site of new cartilage cells during growth

Question 9

Name the two layers of perichondrium

Answer 9

Fibrous Layer

Chondrogenic Layer

Question 10

Perichondrium Fibrous Layer

Answer 10

Type I Collagen and elastin

Forms the transitional layer

Question 11

Perichondrium Chondrogenic Layer

Answer 11

Type II Collagen

Chondroblasts grow into mature chondrocytes within their lacuna in this layer

Question 12

3 types of Cartilage

Answer 12

Hyaline
Elastic
Fibrocartilage

Question 13

Hyaline Cartilage

Answer 13

Most common, surrounded by perichondrium
type II collagen
articular cartilage, larynx, ribs, trachea, embryonic development

Question 14

Elastic Cartilage

Answer 14

3 E’s: External ear, epiglottis, Eustachian Tube
Surrounded by perichondrium
Type II cartilage

Question 15

Fibrocartilage

Answer 15

lacks perichondrium
contains type I cartilage
Intervertebral discs, pubic symphysis, TMJ

Question 16

What type of cartilage lacks perichondrium?

Answer 16

Articular cartilage, Fibrocartilage

Question 17

Appositional Cartilage growth

Answer 17

increases in width

grows like rings on a tree, cartilage formed on existing cartilage

Question 18

Interstitial cartilage growth

Answer 18

occurs when chondrocytes within lacuna divide

increase the length of cartilage, more dense

Question 19

Inverse rule of joint cartilage

Answer 19

The more flexible the joint, the less stable.

The more stable the joint, the less flexible

Question 20

Synoviocytes

Answer 20

cells of synovial fluid in joint capsule

Question 21

Type A Synoviocytes

Answer 21

mAcrophAge like | MAIDS of the joint
phagocytic, lysosomes clean and clear articular cavity of debris
25% of joint cells
regulate inflammatory response

Question 22

Type B Synoviocytes

Answer 22

fiBroBlast like | MOTHERS of the joint
make synovial fluid, produce hyaluronate to combine with synovial fluid, lubricates and nourishes the articular cartilage

Question 23

Articular Cartilage: Superficial Zone

Answer 23

collagen fibers run parallel to surface

devoid of cells in most superficial layer

Question 24

Articular Cartilage: intermediate zone

Answer 24

fibers run oblique to the surface

chondrocytes slightly larger and round

Question 25

Articular Cartilage: Deep Zone

Answer 25

fibers perpendicular to articulating surface

form large radial columns

Question 26

Articular Cartilage: Calcified

Answer 26

stains darker than matrix of other zones

rests on cortex of bone