Cartilage Flashcards Preview

Cell Biology Exam 2 > Cartilage > Flashcards

Flashcards in Cartilage Deck (29):
1

Cartilage

contains cells, fibers and ECM. Is a specialized connective tissue that is firm and pliable

2

3 different types of cartilage

Hyaline, Elastic, Fibrocartilage

3

What does Hyaline cartilage look like

glassy

4

Where is Hyaline cartilage located

In places where it maintains a lumen/open space - such as trachea, nasal, larynx, and bronchi
articular surfaces of bones
epiphyseal plates of growing bones
rib cage

5

Why is hydaline cartilage at the rib cage

to allow flexability

6

Mesenchyme

embryonic connective tissue

7

Chondrification center of chondrobasts

future hyaline cartilage site

8

Chondroblast

synthesizes ECM and start to surround themselves with matrix and occupy a bubble called a "lacuna" they become chondrocytes

9

Isogenous groups of chondrocytes

all come from a single cell, so they are all clones of each other

10

Perichondrium

covers elastic and hyaline cartilage. derives from mesenchyme

11

Inner layer of perichondrium

site of appositional growth

12

Inner cellular layer of hyaline cartilage

site of interstitial growth (specifically isogenous groups)

13

Interstitial growth

growth from within (baking a cake in the oven)

14

Appositional growth

growth on the surface of the cartilage (putting frosting on the cake)
happens throughout the lifespan of cartilage, and in most cartilages

15

What type of growth is present in articular cartilage

interstitial growth, not appositional because it is not covered by perichondrium

16

Is there perichondrium at growth plates

no

17

Chondrocytes

maintain the matrix by monitoring which molecules need to be synthesized and replaced

18

What is hyaline cartilage matrix made of

-mostly type II collagen
-proteoglycans
-glycoproteins
-extracellular fluid

19

Capsular matrix

contains sulfated proteoglycans, glycoproteins, hyaluronana. Will strain dark blue

20

Territorial matrix

contains the same molecules as capsular matrix, but lower concentrations of sulfated proteoglucans

21

Interterritorial matrix

has the same molecules as capsular matrix, but is more dilute

22

Function of hyaline cartilage

resist forces (tension compression)

23

What does hyaline cartilage not have

blood vessels and nerve fibers

24

Where is Elastic cartilage located

ear, auditory tubes, epiglottis, larynx

25

Elastic cartilage

-chondrocytes are larger
-elastic fibers in territorial matrix
-in fresh state looks yellow

26

Fibrocartilage

-lots of colalgen bundles
-chondrocytes form colums, squeezed between collagen bundles.
-is transitional tissue

27

Where is fibrocartilage located

articular disc in TMJ
intervertebral discs
pubic symphysis

28

Function of fibrocartilage

tough support, tensile strength

29

Osteoarthritis "degenerative joint disease"

Articular surface of bone where cartilage has degenerated, exposing the underlying bone