Bone Remodeling and Healing

Question 1

For proper bone growth minerals (calcium salts) and these vitamins are needed.

Answer 1

D, A and C

Question 2

This is when the diameter enlarges as the bone elongates.

Answer 2

Appositional Growth

Question 3

This is the end of growth and can be seen on an x-ray. It’s different for each bone and also for men and women.

Answer 3

Epiphyseal closure

Question 4

This is the process of osteoclasts and osteoblasts removing and replacing minerals in bone.

Answer 4

Remodeling

Question 5

The process of remodeling allows bones to

Answer 5

Adapt to stresses

Question 6

due to remodeling heavily stressed bones will become

Answer 6

thicker and stronger

Question 7

If bones are not submitted to stress, they become

Answer 7

thin and brittle

Question 8

Homeostasis of bone depends on the concentration of minerals, especailly

Answer 8

Calcium

Question 9

This is any crack or break in a bone due to stress or impact

Answer 9

fracture

Question 10

Bones will heal as long as there are cells of the periosteum and endosteum AND

Answer 10

blood supply

Question 11

There are ____ steps of healing.

Answer 11

4

Question 12

Step 1 of healing is when a large blood clot called ______ forms.

Answer 12

Fracture hematoma

Question 13

Step 2 of healing cells undergo mitosis and form thickened layers called

Answer 13

Calluses

Question 14

In the calluses cells will differentiate into chondrocytes and produce

Answer 14

Hyaline cartilage

Question 15

Step 3 of healing is when osteoblasts replace new cartilage with

Answer 15

Spongy bone

Question 16

Step 4 of healing is when remodeling occurs…this is when spongy bone is replaced with

Answer 16

compact bone

Question 17

Bones age due to

Answer 17

inadequate ossification (osteopenia)

Question 18

On average bone aging begins at

Answer 18

30-40 years of age.

Question 19

Women lose ___ of bone per decade and men ____ of bone per decade.

Answer 19

8%, 3%

Question 20

These are responsible for differences in bone growth and aging in men and women.

Answer 20

hormones.