Lab 5 Cartilage

Question 1

The most prevalent cartilage in vertebrates

Answer 1

Hyaline cartilage

Question 2

Where in synovial joints is hyaline cartilage found

Answer 2

At the articular surface (knee and shoulder)

Question 3

This tissue is resilient and can withstand compressive force

Answer 3

Hyaline cartilage

Question 4

Trachea is an example of what cartilage

Answer 4

Hyaline

Question 5

Is hyaline cartilage ECM vascular

Answer 5

No

Question 6

What kind of fibers are embedded in the ground substance of the hyaline ECM

Answer 6

Type 2 collagen fibers

Question 7

Why does hyaline cartilage have a basophilic stain

Answer 7

Sulfate groups on proteoglycans attract basic dyes

Question 8

How many layers is the perichondrium

Answer 8

2 layers

Question 9

What is the outer layer of perichondrium made of

Answer 9

DICT (type 1 collagen)

Question 10

What cells are in the outer layer of perichondrium

Answer 10

Fibroblasts

Question 11

Describe inner layer of perichondrium

Answer 11

Inner layer is chondrogenic and has 2-3 layers of flat, fibroblast-like chondrogenic cells

Question 12

These cells have the capacity to become Chondroblasts

Answer 12

Chondrogenic cells

Question 13

Young cartilage cells that are more round than perichondrial cells and are in the inner perichondrium layer

Answer 13

Chondroblasts

Question 14

What secretes the ECM and what does it eventually become

Answer 14

Chondroblasts secrete the ECM and become chondrocytes

Question 15

During tissue prep, chondrocytes retract from …… leaving gaping holes

Answer 15

Lacunae

Question 16

Daughter cells of mitotic division that are clustered chondrocytes

Answer 16

Isogenous groups

Question 17

ECM immediately enveloping chondrocytes

Answer 17

Territorial matrix

Question 18

Wide space of ECM

Answer 18

Interterritorial space

Question 19

The structure of elastic cartilage is similar to hyaline cartilage except that the ECM contains

Answer 19

The ECM contains elastic fibers

Question 20

What synthesizes elastic fibers

Answer 20

Chondrocytes

Question 21

Is elastic cartilage vascular in adults

Answer 21

No

Question 22

True or false: Fibrous cartilage is vascular

Answer 22

False, it is avascular

Question 23

T/F: fibrocartilage has a perichondrium

Answer 23

False

Question 24

Fibrocartilage is a hybrid tissue, meaning:

Answer 24

It has dense connective tissue and hyaline cartilage

Question 25

What type of collagen does the fibrocartilage ECM have

Answer 25

Type 1 and 2 collagen

Question 26

Does fibrocartilage have a lot of PGs

Answer 26

Fibrocartilage has a low concentration of proteoglycans

Question 27

Fibrocartilage has good tensile strength T/F

Answer 27

True

Question 28

Fibrocartilage lies between

Answer 28

Hyaline cartilage and dense connective tissue

Question 29

In vertebrates, most skeletal elements from the neck down form by

Answer 29

Endochondral Ossification

Question 30

The resting zone is …

Answer 30

Unaffected by EO and randomly scattered with chondrocytes

Question 31

Zone of proliferation

Answer 31

Stacking chondrocytes

Question 32

Zone of hypertrophy

Answer 32

Swelling chondrocytes

Question 33

Zone of degradation

Answer 33

One terminal hypertrophic layer facing trabecular bone and marrow

Question 34

Zone of ossification

Answer 34

Trabecular bony spicules with hypertrophic cartilage cores

Question 35

Osteoclasts are derived from

Answer 35

Monocytes lineage and are multinucleate

Question 36

Howship’s lacunae

Answer 36

Resorption pits contain osteoclasts present on trabecular bone

Question 37

Bone-resorbing cells in zone of ossification

Answer 37

Osteoclasts