What do you know about BONES ?
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What do you know about BONESBONES ?
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Bones are a Living Tissue ! ! !
• Made of both hard and soft materials;• Spaces allow blood to circulate throughout
the bones
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Skeletal System
• Classification:Long Bones (1)Short Bones (2)Irregular Bones (3)Flat Bones (4)
(1)
(2)
(3)
(4)
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Types of Bone Tissue
Compact and Spongy
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Marrow and Blood Cells
The Marrow is responsible for the production of blood cells!
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Why do I need a Skeleton?
Bricks
Framework
House
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Why do I need a Skeleton?
Muscles Skeleton (Framework)
Animal
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The Axial Skeleton
• The part of the skeleton that forms the axis;
• Provides support and protection.
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The Appendicular Skeleton
• Attached to the axial skeleton;
• Its main function is to allow movement.
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The skeleton changes as the body develops and ages.
Infancy Childhood
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The skeleton changes as the body develops and ages.
• In adolescence bones stop growing No more growth discs;
• In adulthood decrease of bone density (weaker bones!)
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JOINTS Connect Parts of the Skeletal System
• Immovable and slightly movable joints;
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JOINTS Connect Parts of the Skeletal System
• Freely movable joints
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Types of Movement
ANGULAR ROTATIONAL
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FOR NEXT CLASS...FOR NEXT CLASS...
• Review 1.2Review 1.2Exercises 1-5.Exercises 1-5.
• Dictionary (@ Dictionary (@ least 15 least 15 words!)words!)