1. 1.03 Understand the functions of the skeletal system

2. 1.03 Understand the functions of the skeletal system
What do you know about bone functions put three thoughts in your notes? 2

3. functions and disorders of the skeletal system
1.03 Understand the
functions and disorders of the
skeletal system
Essential Standards:
What are the functions of the skeletal system?
1.03 Understand the functions and disorders of the skeletal system 3

4. Functions of the Skeletal System
What are the functions of the skeletal system?
Protection
Support
Movement
Hematopoiesis
Mineral Storage
Bone Formation

5. Functions of the Skeletal System
Which skeletal structures provide protection?
Skull protects _____
Spinal Column: ______
Ribs: ____________
Pelvic girdle: ______
Long bones: _________
Brain, spinal cord, all abdominal organs, all pelvic organs, bone marrow, 5

6. Functions of the Skeletal System
How does the skeletal system provide support?
provide a scaffold to support the body’s weight, the bones and cartilage of your skeletal system compose the scaffold that supports the rest of your body.
1.03 Understand the functions and disorders of the skeletal system 6

7. Functions of the Skeletal System
Movement Types:
Abduction/Adduction
Circumduction
Rotation
Flexion/Extension
Pronation
Supination
1.03 Understand the functions and disorders of the skeletal system 7

8. Functions of the Skeletal System
Movement in these pictures.
Flexion/Extension:
Flexion brings two bones closer together (flex muscles)
Extension is to straighten;
the act of increasing the angle between two bones ex: standing - knee joint extends 8

9. Functions of the Skeletal System
Movement in these pictures.
Abduction/Adduction (#2)
Abduction: movement of limb away from midline of body
Adduction: movement of limb toward midline of body
1.03 Understand the functions and disorders of the skeletal system 9

10. Functions of the Skeletal System
Movement in these picture # 3.
Circumduction: circular movement
1.03 Understand the functions and disorders of the skeletal system 10

11. Functions of the Skeletal System
Movement
Rotation: bone turns on its axis (turning your head side to side like showing NO)
1.03 Understand the functions and disorders of the skeletal system 11

12. Functions of the Skeletal System
Movement
Pronation: palm face down or laying on belly face down
Supination: palm face up or laying on your back face up
1.03 Understand the functions and disorders of the skeletal system 12

13. Functions of the Skeletal System
Discuss hemopoiesis
Process of red blood cells made in red bone marrow of bones
White blood cells are made in yellow bone marrow
1.03 Understand the functions and disorders of the skeletal system 13

14. Functions of the Skeletal System
Which minerals are stored in the skeletal system?
Calcium
Phosphorus
What is the relevance to your health?
Needed for bone strength and cellular homeostasis 14

15. Functions of the Skeletal System
Bone Formation
Embryo skeleton starts as osteoblasts, then changes to cartilage
Ossification, hardening of bones, (bone replaces cartilage) starts at 8 weeks of age
Osteocytes, bone cells, are formed from Osteoclasts as bones grow and old cells are replaced 15

16. 1.03 Understand the functions of the Skeletal System
Essential Standards:
What are the functions of the skeletal system?
1.03 Understand the functions and disorders of the skeletal system 16

17. 1.03 Understand the functions of the skeletal system
The End
1.03 Understand the functions and disorders of the skeletal system 17