Osteology

Question 1

5 bones

Answer 1

Long bones
Short bones
Flat bones 
Irregular bones
Sesamoid bones

Question 2

Functions

Answer 2

1) Protection
2) Support
3) Muscle attachment
4) Movement

5)Formation of RBC - red marrow yellow marrow
(Adult flat bones = red marrow scapula ribs pelvis sternum incancellous in long bones such as femur )

6)Storeage of minerals- act as a resivoir for calcium 99% and phosphorus 85% important for muscle and nerves

Question 3

Structure of flat bone

Answer 3

2 Thin-layers of compact bone with cancellus bone in between provides resistance against impact injuries

E.G scapula

Question 4

Structure of short bones

Answer 4

Mainly cancellous bone surrounded by thin-layer of compact bone

Cancellous bone contains thin layers or sheets of bone and is able to absorb compression forces

Layers arranged according to predominant lines of stress

Support stability little movement

E.G talus

Question 5

Structure of sesamoid bone

Answer 5

Often present when the line of pull of a muscle needs to alter to improve efficiency of that muscle

E.g patella