the skeletal system eq: how does the skeleton function, and how do joints help our bodies move?
TRANSCRIPT
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The Skeletal System
EQ: How does the skeleton function, and how do joints
help our bodies move?
http://www.shockfamily.net/skeleton/JOINTS.HTMLhttp://www.ehc.com/vbody.asp
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Previously, in life science…
Previously, students learned about the systems of the human body. Now, they will look at the skeletal system in greater depth.
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Bones are alive!
A. Stronger than concrete or rock!B. 20% of our body weight is bone!
C. Bones contain cells and tissue!D. They grow and repair
themselves!
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1. What do the skeletal AND muscular systems do?
Bones and muscles work together to allow you to move.
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2. What are the major functions of the skeletal system?
Provides shape & support
(like the frame of a building)
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2. Enables you to move
(provides places for your muscles to attach)
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3. Protects your internal organs (brain, heart, lungs)
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4. Produces blood cells!
(blood cell factories in the bone marrow)
White blood cell Red blood cells
Red blood cells
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5. Stores certain materials until your body needs them.
Examples: calcium & phosphorus
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3. Why is the vertebral column considered the center of the skeleton?
The bones in the skeleton are in some way connected to the backbone.
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4. What is a joint?A place in the
body where two bones come together.
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5. What role do joints play in the body?Joints allow bones to move in different ways!
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6. How are joints classified?
2 types of joints
Immovable Movable
(can’t move) Hinge
ex: Cranium Ball and Socket
Pivot
Sliding
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7. What type of joint is found in the elbow and knee?Hinge joint
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8. What type of joint is found in the shoulder and hip?Ball-and-Socket joint
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9. What type of joint is found in the neck?Pivot joint
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10. What type of joint is found on the wrist and ankles?Sliding joint
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11. What does a ligament do?
Holds bones together in a movable joint.
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12. What is cartilage?Tough but flexible
connective tissue that covers the ends of bones.
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At your table...
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13. Draw the structure of bones
Diagram PH 522-523
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14. How do you keep your bones healthy?
Eat a balanced diet (strength) & get regular exercise(density)
Your bones need CALCIUM!