BMS09-1015 Bone Cells

Question 1

What is bone

Answer 1

Living hard connective tissue protecting organs

Question 2

What % of bone is mineral?

Answer 2

75

Question 3

What forms matrix?

Answer 3

90% type 1 collagen
5% water
5% osteopontin, osteocalcin and other non-collagenous proteins

Question 4

How many bones are there?

Answer 4

206

Question 5

What is fibrocartilage?

Answer 5

Dense collagen 1 fibres added to hyaline matrix

Question 6

What 2 things are made of elastic cartilage?

Answer 6

Auricle of the ear and the larynx

Question 7

What is elastic cartilage?

Answer 7

Elastic fibres added to hyaline matrix

Question 8

2 examples of hyaline cartilage

Answer 8

Ribs

Trachea

Question 9

How do osteoclasts eat?

Answer 9

Lysosomes

Proton pumps

Question 10

What connects osteocytes?

Answer 10

Canaliculi gap junctions

Question 11

What shape are osteoblasts?

Answer 11

Cuboidal

Question 12

What do osteoblasts make?

Answer 12

Osteoid

Question 13

Structure of GAG’s

Answer 13

Brush like

Question 14

Matrix proteins of bone (5)

Answer 14

Type 1 collagen
Osteocalcin
Osteonectin
Osteopontin
Proteoglycans

Question 15

Proteoglycans

Answer 15

Regulation of collagen fibril formation and mineralisation

Question 16

Osteopontin

Answer 16

Attaches cells to matrix

Question 17

Osteonectin

Answer 17

Calcium binding

Question 18

Osteocalcin

Answer 18

Bone specific calcium binding

Question 19

Does woven or lamellar bone have more cells?

Answer 19

Woven

Question 20

Where is cortical and trabecular bone?

Answer 20

Cortical outside trabecular inside