FUN-2 Cartilage, bone and joints

Question 1

Primitive cartilage cells are called?

Answer 1

Chondroblasts

Question 2

Where are primitive cartilage cells/chondroblasts formed?

Answer 2

Embryonic mesenchymal cells

Question 3

What do chondroblasts do that will form them into chondrocytes?

Answer 3

Secrete ground substance

Question 4

3 types of cartilage?

Answer 4

1. Hyaline
2. Elastic
3. Fibrocartilage

Question 5

Too much growth hormone before epiphyseal fusion results in?

Answer 5

Gigantism

Question 6

Too much growth hormone after epiphyseal fusion results in?

Answer 6

Acromegaly

Question 7

The hereditary defect of endochondral ossification is called

Answer 7

Achondroplasia

Question 8

What has no blood vessels nor nerve endings?

Answer 8

Cartilage

Question 9

What are active bone cells called?

Answer 9

Osteoblasts

Question 10

What bone cells are mature, yet inactive?

Answer 10

Osteocytes

Question 11

What type of bone cell is associated with bone-specific alkaline phosphatase?

Answer 11

Osteoblast

Question 12

What type of bone cell is bone-resorbing and derived from macrophages?

Answer 12

Osteoclast

Question 13

What type of bone cell is multinucleate?

Answer 13

Osteoclast

Question 14

2 types of bone depending on density?

Answer 14

1. Compact/cortical

2. Cancellous/trabecular

Question 15

2 types of bone depending on orientation of collagen fibres?

Answer 15

1. Lamellar

2. Woven

Question 16

Difference between lamellar and woven bone?

Answer 16

Lamellar has regularly arranged collagen fibres, whereas woven has irregular

Question 17

Which direction do Haversian canals run?

Answer 17

Longitudinally

Question 18

Which direction do Volkmann’s canals run?

Answer 18

Radially/transversely