1. Body Systems
Bones and Muscles

2. Skeletal System 4 Functions of the skeletal system
key role in movement
provides a strong, stable &mobile framework on which muscles can act
Supports and protects internal organs
Storage centers for essential body minerals (ex: calcium and phosphorus)
Manufactures blood cells

3. Structure of the Skeletal System
206 bones
Axial skeleton
80 bones of the skull, spine, ribs, and sternum(breastbone)
Appendicular skeleton
126 bones of the shoulders, arms, hands, hips, legs, and feet

4. Types of Bones Four types of bones: Long-Femur Short-Wrist Flat-Rib
Irregular-vertebrae

5. Cartilage and Joints Cartilage-strong, flexible connective tissue
Joints-the point at which two bones meet.
Ball and Socket Joint-Shoulder
Pivot Joint-head & neck
Ellipsoidal Joint-wrist
Hinge Joint-elbow

6. Ligaments and Tendons Ligaments Tendons
Tough bands of fibrous, slightly elastic tissue that bind the bone ends at the joint.
Tendons
Fibrous cords that join muscle to bone or to other muscles.

7. Types of Muscles Cardiac Muscles:
Special type of striated tissue that forms the walls of the heart.
Smooth Muscles
concerned with movements of internal organs-(involuntary) intestines
Skeletal Muscles
striped muscles, or striated, that are attached to bones that cause body movements-(voluntary)
Flexors-muscles that close a joint
Extendors- muscles that open out a joint

8. Muscles:“Use it or lose it”
Atrophy-unused muscles waste away
Muscle tone- the natural tension in the fibers of a muscle.

9. Osteoporosis Jigsaw Create a poster that addresses your myth
Must include information about the myth
at least 3 key points & 3 images
Neatly done with all group member’s names
Present info to the rest of the class