Cartilage Flashcards Preview

MCBM Exam 3 > Cartilage > Flashcards

Flashcards in Cartilage Deck (40)
Loading flashcards...
1

What are the three types of cartilage?

Hyalin
Fibrous
Elastic

2

What is the ground substance of cartilage made out of?

Chondroitin sulfate
Keratan sulfate

3

What makes up the matrix of collagen?

Fibers + ground substance

4

Hyalin and elastic cartilage develop from what?

Mesenchyme

5

Mesenachymal cells differentiate into what?

Chondroblasts

6

When chondroblasts become entrapped in lacunae, what are they termed?

Chondrocytes

7

From what is the perichondrium derived?

Mesenchymal cells surrounding the developing cartialge

8

What is the outer layer of the perichondrium made up of?

Fibroblasts
Mesenchymal cells

9

Where is the chondrogenic layer found?

In the inner layer of the perichondrium

10

What is the chondrogenic layer?

Where chondroblasts undergo mitosis to produce more chondroblasts

11

From what does fibrocartilage develop?

Dense connective tissue

12

What is appositional growth?

Growth only occurring on the surface

13

Appositional growth only allows for which direction of growth?

Width

14

In appositional growth, where are the new layers of cartilage laid down?

Around the perimeter of the existing cartilage

15

What will occur to appositional growth if the perichondrium is removed?

Appositional growth will cease

16

Appositional growth is dependent upon what?

The mitotic activity of the chondrogenic layer of the perichondrium

17

What is interstitial growth?

When new cartilage is added within existing cartilage

18

Interstitial growth increases what?

Length (specific for endochondral bone formation)

19

In interstitial growth, what is formed as a result of mitotic activity within lacunae?

Cell nests

20

In interstitial growth, continued secretion of matrix results in what?

The lacunae moving apart from one another

21

Does cartilage have a blood supply?

No

22

How to chondroblasts get nutrition?

Diffusion of tissue fluid through the matrix

23

Where does the tissue fluid that feeds the chondroblasts originate?

From blood vessels located outside the perichondrium

24

Invasion of cartilage by blood vessels is usually associated with what?

Calcification and death of the cartilage

25

What type of cartilage comprises the skeleton of the embryo?

Hyaline cartilage

26

What progressively replaces hyaline cartilage as we grow?

Bone

27

40% of the matrix of hyaline cartilage is what type of collagen?

Type II

28

In hyaline cartilage, the matrix appears ___.

Homogenous - can't bee see with a light microscope

29

What makes up the amorphous ground substance of hyaline cartilage?

Chondroitin sulfate
Keratan sulfate

30

In hyaline cartilage, where are younger cells found? Older cells?

Small, flat-ish lacunae
Large, round lacunae