1. Warm up: What is your skeleton made up of? What does your skeleton do?
Do all living things have a skeleton?

2. Skeletal System
Objective: Explain the primary functions of the skeletal system and the major organs within this system

3. 206 bones in all!! 22 bones in skull 6 in middle ears 1 hyoid bone
26 in vertebral column
25 in thoracic cage
4 in pectoral girdle
60 in upper limbs
60 in lower limbs
2 in pelvic girdle
206 bones in all!!

4. Skeletal System Information
Appendicular System bones of limbs and bones that anchor them to the axial skeleton
126 bones
Axial System - supports and protects organs of head, neck and trunk
80 bones

5. Functions of bone (skeleton)
1. Support and protection
2. Blood cell formation
3. Mineral storage (calcium especially)
4. Site for muscle attachment  body movement

6. Types of Joints Fixed joints – don’t move
Hinge joints – only move in one direction
Ball-n-socket joints – can move in many directions
Gliding joints – only allow gliding movement

7. Types Of Joints Pivot Hinge Ball & Socket Gliding Top of the neck
Elbow/Knee
Ball & Socket
Gliding
Intercarpal joints
Shoulder/Hip

8. Cranium
Mandible
Clavicle
Sternum
Scapula
Humerus
Rib
Vertebral Column
Ulna
Pelvis
Radius
Sacrum
Carpals
Coccyx
Metacarpals
Phalanges
Femur
Patella
Tibia
Fibula
Tarsals
Metatarsals
Phalanges

9. Radius (side by thumb)
Ulna (by pinky)

11. Fibula (small and thin) Tibia (bigger bone)
Fib rhymes with thin?
Tibia (bigger bone)
Big Toe = Tibia (t and t)

15. bones which do not fall into any other category
Types of Bones
Long Bone
Short Bone
Head – Body - Head
As wide as they are long
Flat Bone
Irregular Bone
Provides Protection
bones which do not fall into any other category

16. Connective Tissues 1. Cartilage – 2. Ligament – 3. Tendon –
Allows joints to move easily, cushions bones, and supports soft tissue
2. Ligament –
Hold bones in place at the joints
3. Tendon –
Joins muscle to muscle or muscle to bone

17. Conditions of the Skeletal System
Osteoporosis
Bones become fragile and more likely to break
Osteoarthritis
Joint disorder where the cartilage is wearing away