the skeletal system. 5 functions of the skeletal system: shape and support movement protection of...
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The Skeletal System
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5 Functions of the Skeletal System:
• Shape and Support• Movement• Protection of internal organs
• Production of blood cells• Storage of vitamins & minerals
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The backbone or vertebral column is the center of the skeleton.
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The backbone is made up of 26 small bones called vertebrae.
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Parts of the Bone• Compact Bone
• Spongy Bone
• Bone Marrow
• Peristeum (Outer Membrane)
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The spaces in bone contain a soft connective tissue called marrow. The job of the bone marrow is to make blood cells.
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Cartilage• connective tissue that is
more flexible than bone.
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Joints• places in
the body where two bones come together.
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Immovable joints connect bones in a way that allow little or no movement.
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Moveable joints allow the body to make a wide range of movement.
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There are 4 types of moveable joints:
Ball-and-socket
Hinge
Gliding
Pivot
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Ball–and–Socket Joint• allows the widest
range of motion.• shoulder and hip
are examples.
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Hinge Joint• allows movement
in one plane.• knee and elbow
are examples.
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Gliding Joints• provides sliding
movement.• ankle and wrist are
examples.
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Pivot Joints
• allows rotation.• the neck is an
example.
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• strong connective tissue that hold bones together
Ligaments
Note: ACL tear is a common injury for football and basketball players. Why ?
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Osteoporosis is a condition in which the body’s bones become weak & break easily.