1. The Skeletal System

2. Identify the subdivisions of the skeleton as axial or appendicular
Objective 1
Identify the subdivisions of the skeleton as axial or appendicular

3. The Skeletal System Parts of the skeletal system Bones (skeleton)
Joints – point of movement
Cartilages – protection
Ligaments – connect bone to bone
Divided into two divisions
Axial skeleton
Appendicular skeleton

4. The Axial Skeleton Forms the longitudinal, central part of the body
Divided into three parts
Skull

5. The Skull
Figure 5.7

6. The Axial Skeleton Forms the longitudinal, central part of the body
Divided into three parts
Skull
Vertebral column

7. The Vertebral Column Vertebrae separated by intervertebral discs
The spine has a normal curvature
Each vertebrae is given a name according to its location
Figure 5.14

8. The Axial Skeleton Forms the longitudinal, central part of the body
Divided into three parts
Skull
Vertebral column
Bony thorax

9. The Bony Thorax Forms a cage to protect major organs
Made-up of three parts
Sternum
Ribs
Thoracic vertebrae
Figure 5.19a

10. The Appendicular Skeleton
Limbs (appendages) – all arm and leg bones
Pectoral girdle
Clavicle, scapula

11. Bones of the Shoulder Girdle
Figure 5.20a–b

12. The Appendicular Skeleton
Limbs (appendages) – all arm and leg bones
Pectoral girdle
Clavicle, scapula
Pelvic girdle
Ilium, ishium, pubic bone

13. The Pelvis
Figure 5.23a

14. List 5 functions of bones.
Objective 2
List 5 functions of bones.

15. Functions of Bones
Protection of soft organs (ribs/lungs & Heart, skull/brain)
Support of the body (keeps us up)
Movement due to attached skeletal muscles and levers (joints)
Storage of minerals (calcium and phosphorus) and fats
Blood cell formation …in the marrow (center) of long bones