Connective Tissue 2:

Question 1

What are the properties of cartilaginous tissue?

Answer 1

Non Vascularized

No Nerves

No lymphocytes

La nutrition du cartilage et les échanges métaboliques se font par diffusion avec le périchondre (liquid synovial)

Question 2

What is the difference in presentation of cartilaginous tissue between the fetus and adult?

Answer 2

constitue la plus grande partie du squelette chez le fœtus: l’ébauche
initiale des os long

Distribution limitée chez l’adult
arbre respiratoire, conduit auditif externe, trompe d’Eustache, nez
articulations mobiles, jonction côtes-sternum

Question 3

What is the main collagen type in the ECM of cartilaginous tissue?

Answer 3

Collagen Type II

Question 4

What is a Aggrécane?

Answer 4

Agrégats de protéoglycanes sont beaucoup plus volumineux que ceux dans le TC et forment un complexe particulièrement grand:

Question 5

What is chondronectine?

Answer 5

glycoprotéine, la chondronectine, qui assurent la liaison entre les fibrilles de collagène et les protéoglycanes

Question 6

What are the main cells of cartilaginous tissue?

Answer 6

Les cellules chondrogéniques:
Les chondroblastes:
Chondrocytes:

Question 7

Where do we find and what is the role of cellules chondrogéniques?

Answer 7

At the périchondre interne

Can divide to give chondroblastes

Question 8

Where do the collagen fibers come from in the cartilaginous tissue?

Answer 8

chondroblastes

Question 9

Where do we find chondrocytes?

Answer 9

Inside the cartilage
Inside chondroplasts

Question 10

TRUE OR FALSE, The components of the ECM in cartilaginous tissue are fibers, elastin as well as fundamental tissue.

Answer 10

FALSE
No elastin in cartilaginous tissue

Question 11

What are the two layers of perichondre and their associated fibers?

Answer 11

Une couche externe: collagène de type I.
Une couche interne: collagène de type II

Question 12

TRUE OR FALSE, cartilaginous tissue and its périchondre are poor in blood supply.

Answer 12

FALSE,

Le périchondre est richement vascularisé et il nourrit le cartilage qui est dépourvu de vaisseaux.

Question 13

What are the three types of cartilage?

Answer 13

1. Le cartilage hyalin
2. Le cartilage élastique
3. Le cartilage fibreux ou fibrocartilage

Question 14

What is the main collagen type found in 1. Le cartilage hyalin?

Answer 14

Collagen type II

Question 15

What are the two types of hyalin cartilage?

Answer 15

Articulaire:
Non-Articulaire:

Question 16

What is the main property of cartilage hyalin Articulaire and what does this mean?

Answer 16

Sans périchondre → Will get all nutriments from Liquide Synovial

This is what we find at bone joints

Question 17

What is the main property of cartilage hyalin non-Articulaire and where do we find it (2)?

Answer 17

Entouré de périchondre
Trache et des Bronches Pulmonaires

Question 18

What kind of fibers do we see in the ECM of cartilage élastique?

Answer 18

Collagen type II (and elestic fibers)

Question 19

Main place we find cartilage élastique?

Answer 19

The epiglottis

Question 20

What is cartilage fibreux ou fibrocartilage a combination of?

Answer 20

Dense connective tissue proper-> a lot of collagen type I
Cartilage -> collagen type 2

Question 21

True of False, just like cartilage articulaire, fibrocartilage does not have any perichondre.

Answer 21

True

Question 22

Where do we find cartilage fibreux ou fibrocartilage?

Answer 22

In the intervertebral discs

Question 23

What are the two growth ways of cartilogenous tissue?

Answer 23

Appositionnelle:
From Perichondre From exterior → chondrogenic cells → chondroblasts → chondrocytes

Seen in pre-natal and new-borns

Interstitielle:
Division of Chondroblasts and Chondrocytes

They cannot reproduce forever → this is why we have joint pain 😟

Chondrocytes ont la capacité de se diviser, ce qui créent des « nids » de cellules, ou des groupes isogéniques

Question 24

What is the main reason of joint pain?

Answer 24

Interstitielle: growth of cartilage
They cannot reproduce forever → this is why we have joint pain 😟

Question 25

What are groupes isogéniques?

Answer 25

Les chondrocytes ont la capacité de se
diviser, ce qui créent des « nids » de cellules,
ou des groupes isogéniques.
La déposition de matrice extracellulaire
sépare les cellules qui résultent de la mitose,
mais elles restent en proximité les unes des
autres.