aim: how is the human skeletal system organized?
TRANSCRIPT
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Aim:How is the human skeletal system organized?
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What are the functions of the skeletal system?1. provide shape & support2. aid in movement3. produce red blood cells4. protect vital organs
• Skull – brain• Ribs – heart and lungs• Vertebrae – spinal cord
5. Store minerals (calcium & phosphorus)
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What are the three parts of bone?1. MEMBRANE
- repairs injuries, attaches to muscles2. BONY LAYER
– bone cells. Minerals help keep them hard
3. MARROW – soft tissue that produces blood cells
How are bones held together?- by CONNECTIVE TISSUE
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What are the types of connective tissue?1. CARTILAGE – soft tissue between bones, acts as a cushion- strong, flexible, & very slickEx: disks between vertebra2. LIGAMENT – tissue which connects 1 bone to another.Ex: collateral ligaments in knee3. TENDONS – tissue which connects a muscle to a boneEx: Achille’s tendon in ankle
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What is a joint?- The area where 2 bones meet.
What are the different types of joints?
1. FUSED/FIXED/IMMOVABLE – no movements, bones are fused togetherEx: cranium, pelvis
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What are the Different types of Joints?
2. BALL AND SOCKET- Allows movement in all
directions- Ex. Hip, Shoulder.
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What are the Different types of Joints?
3. HINGE Joint– one way movement back and forthEx: knee, elbow
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What are the Different types of Joints?
4. PIVOT- turn side to side ( rotation around a
point).Ex: neck
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What are the Different types of Joints?
5. GLIDING – little movement, bones slide over,
around each otherEx: vertebrae, ankles, wrist
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BrainPop
Joints and Skeletal system under Health