1. Musculo-Skeletal System

2. Role of the Musculo-skeletal System To provide support & protection for our organs Allows movement

3. Sections of the Skeleton Interactive-biology.com

5. Functions of Each Section All bones provide the function of support. Additionally: Head: protection for our brain Spinal Column: rotation, flexibility Thorax: protects lungs and heart Upper & Lower Limbs: bones act as levers for lifting and walking; bone marrow stores important minerals; bone marrow produces red blood cells

6. Joints Roles of joints: – Links bones together (ligaments) – Helps with mobility (moving) (tendons) Chop.edu

7. Types of Joint Movement p225 Rotation

8. Flexion and extension

9. Antagonistic Muscles Antagonistic muscles are muscles that act in opposite ways. i.e. Biceps and triceps Talktalk.co.uk

10. Types of Muscles There are three main types of muscles: Skeletal, cardiac, smooth Different by structure, function and endurance. Where each type is found in the body depends on what it is used for

11. Muscle Fibers Look like: Striated muscles have stripes Unstriated have no stripes

12. Skeletal muscle - Striated - we have voluntary control - good for short term, strength - in our arms, legs, back, abs, etc Stevegallik.org

13. Cardiac (heart) muscle - striated (the arrow points to it) - is involuntary - for long term endurance and strength - found in our heart seys-science.wikispaces.com

14. Smooth Muscle - unstriated - for involuntary muscle contractions (like in our digestive tract) www.gwc.maricopa.edu

15. Major Muscle Groups Myweightlifting.com