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![Page 1: Get out ISN we are taking notes Content Objective: Students will demonstrate comprehension of structure and function of the skeletal system by writing.](https://reader030.fdocuments.us/reader030/viewer/2022032723/56649d215503460f949f5fff/html5/thumbnails/1.jpg)
Get out ISN we are taking notes
• Content Objective: Students will demonstrate comprehension of structure and function of the skeletal system by writing about what they learn during the powerpoint.
• Language Objective: Student will read about structure and function of the skeletal system and write examples for the types of bones and joints found in the body.
• Quiz Friday
• Independent study projects due Next week.
• Need your Science Fair permission forms By Friday!!
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Independent Study Projects Due Next Friday Counts as a test grade failure to turn in results in a
zero as a test grade!!1st Period•IriAmin Holguin•Daniela Mendoza•Tristan Yin
4th Period•Madilyn Davenport•Chyanne Gregg•Alecia Ramirez
5th Period•Kynnedy Flannel•Jack LeBato•Jose Moreno•Samantha Moreno•Dulce Sosa
6th Period•Paul Grundy
7th Period•Chris Gonzales•Cameron Lopez
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The Skeletal System
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The Skeletal System
• Definition:– all the bones in the
body
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Living or Non-living?
• LIVING- – Proof: cells are found in bones, and all living
things are made up of cells.
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The Skeletal System
Function
– forms an internal, living framework that• provides shape and support • protects internal organs • Attach muscles so that they can move • forms blood cells (bone marrow)• stores calcium and phosphorous
compounds for later use
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Bones
• Made of layers of living tissue
• Outer Layer: Covered with a tough, tight-fitting membrane called the periosteum
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Compact Bone
• Found Directly under the periosteum
• Hard, strong layer Gives bones strength
• Made of deposits of calcium phosphate
• Contains bone cells and blood vessels
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Spongy Bone
• Located at the ends of long bones
• Has many small, open spaces that make bones lightweight
• It is filled with a substance called marrow – yellow composed of fat cells – red produces red blood cells
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http://www.bmb.psu.edu
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Cartilage
• Smooth, slippery, thick layer of tissue
• Thick soft tissue covers the ends of bones
• Purpose: reduce friction b/w bones/acts as a shock absorber
• Does not contain blood vessels or minerals which makes it unable to regenerate
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Joints
• Definition:– Any place where two or more bones come
together
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Joints
• Bones at joints are separated by a thin layer of cartilage so that they do not rub against each other as they move
• Bones are held in place at joints by a tough band of tissue called ligament
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Types of Joints
• Immovable– Skull– Pelvis
• Moveable– Pivot– Ball & socket– Hinge– Gliding
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Immoveable Joints
• Allow little or no movement.– Examples: Skull,
Ribs, pelvis
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Types of Joints•Ball and Socket Joint
•Bone with a rounded end that fits into a cuplike cavity on another bone
•Examples: Hip and Shoulderhttp://www.shockfamily.net/skeleton/JOINTS.HTML
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Types of Joints•Pivot Joint
•One bone rotates in a ring of another bone that does not move
• Examples:
radius/ulnar joint, cervical joint (cranium on the cervical vertebra)
http://www.funhousefilms.com/b-pivot2.jpg
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Types of Joints
http://www.shockfamily.net/skeleton/JOINTS.HTML
•Hinge Joint
•Back-and-forth movement like hinges on a door
•Examples: Elbow, knees, fingers, toes
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Type of Joints
http://www.shockfamily.net/skeleton/JOINTS.HTML
•Gliding Joint
•One part of a bone slides over another bone
•Examples: wrists, ankles, between vertebrae
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Joint Problems• Arthritis- describes 100 different diseases
of the joints. – All forms begin with the same symptoms in
the joints• Pain• Swelling• Stiffness