Bones

Question 1

Osteoblasts

Answer 1

Bone forming cell

Question 2

What do osteoblasts produce

Answer 2

A protein called callogen

Question 3

What form collagen fibres

Answer 3

Hard compounds

Question 4

When do dormant bone cells form

Answer 4

When osteoblasts become trapped in the hard compound

Question 5

What is the increase in lenght of a bone from

Answer 5

Growth plates made fo cartilage

Question 6

Where are growth plates found

Answer 6

Between the epiphysis and diaphysis of the bone

Question 7

What happens in the growth plate

Answer 7

Cartilage is continually formed into bone

Question 8

Ossified

Answer 8

When cartilage is formed into bone in the growth plates

Question 9

When do growth plates cease to function

Answer 9

When the person becomes an adult

Question 10

Osteoporosis

Answer 10

Loss of protein material from bone

Question 11

Osteoclast

Answer 11

Bone digesting cell

Question 12

Osteoblasts and clasts work in conjunction to..

Answer 12

Enlarge the medullary cavity and thicken the compact bone before lining it

Question 13

Renewal of bone depends on

Answer 13

Physical activity
Hormones
Diet

Question 14

What happens when bones become stressed by physical activity

Answer 14

Bones become thick and strong (osteoblasts are stimulated)

Question 15

Lack of stress on a bone cause them to become..

Answer 15

Thin

Question 16

Main hormones affecting bone growth

Answer 16

Growth hormone
Sex hormone
Parathormone

Question 17

Growth and sex hormones imcrease..

Answer 17

Size of bones

Question 18

Parathormone remove

Answer 18

Calcium from bones