DHUBS 2 Week 1 - Bone

Question 1

What are the basic cell types of bone?

Answer 1

Osteocytes
Osteoblasts
Osteoclasts

Question 2

What is the function of osteocytes?

Answer 2

Mature bone cells

Maintain bone structure

Question 3

What are the functions of osteoblasts?

Answer 3

Bone forming cells

Question 4

What are the functions of osteoclasts?

Answer 4

Bone-resorbing cells

Question 5

What are the building blocks of bone?

Answer 5

Water, organic material and inorganic material

Question 6

What makes up organic material and what is organic materials purpose?

Answer 6

Various types of collagen, mainly Type I and Type III

They provide tensile strength and flexibility.

Question 7

What makes up inorganic material and what is inorganic materials purpose?

Answer 7

Hydroxyapatite crystals
Provide rigidity and hardness to bone.

Question 8

What are the 4 types of bone classifications?
Provide an example for each type.

Answer 8

Long bone - Humerus or femur

Short bone - carpals

Flat bone - sternum

Irregular bone - vertebrae

Question 9

List the various parts of the long bone and their functions.

Answer 9

Epiphysis:
- contains red bone marrow for blood cell production
- absorbs shock
- provides support

Epiphyseal Plate:
- critical for growth

Diaphysis:
- The shaft of the long bone
- allows blood vessels and nerve supply to the bone
- has yellow marrow that stores fat

Metaphysis:
- Mix of compact and spongey bone
- contains epiphyseal plate during childhood