Bone classification & other

Question 1

What are the 7 functions of bone?

Answer 1

1. support
2. protection
3. movement
4. mineral & growth factor storage
5. blood cell formation
6. triglyceride (fat) storage
7. hormone production

Question 2

What is the axial skeleton?

Answer 2

Axial skeleton: long axis of body; skull, vertebal column, rib cage

Question 3

What is the appendicular skeleton?

Answer 3

Appendicular skeleton: bones of upper & lower limbs; girdle attaching limbs to axial skeleton

Question 4

What are long bones?

Answer 4

• longer than they’re wide; bones of appendages
• ex. humerus, radius, ulna, fibula, femur, tibia

Question 5

What are short bones?

Answer 5

• cubed shaped; sesamoid: bones grow inside a tendon (patellar)
• ex. phalanges and tarsals

Question 6

What are flat bones?

Answer 6

• thin, flat, and slightly curved
• ex. sternum and scapula

Question 7

What are irregular bones?

Answer 7

• complicated shaped
• ex. vertebrae and oscoxae

Question 8

What is the diaphysis?

structure of long bone

Answer 8

• tubular shaft
• forms long axis of bone
• consist of compact bone; surrounds central medullary cavity
• filled w/ yellow marrow (in adults)

Question 9

What is the epiphyses?

structure of long bone

Answer 9

• on both ends of long bones
• consist of compact bone (externally)
• consist of spongy bone (internally)
• articular cartilage covers joint surfaces

Question 10

What is the epiphyseal line?

structure of long bone

Answer 10

• between diaphysis and epiphysis
• where bone growth occurs
• called growth plate

Question 11

What is wolfs law?

Answer 11

• bones adapting to the response and demand you put on them